Acid-basic equilibrium and complex compound in biological liquids
1. What compound can’t dissolve in water at standard state?
A. Acetic acid.
B. Ethanol.
C. Sodium chloride.
D. Oil.
E. Sugar.
ANSWER: D
2. Solution is it:
A. Heterogeneous system which consists of two components.
B. Homogeneous system which consists of two or more components and their products.
C. Heterogeneous system which consists of two or more components and their products.
D. Heterogeneous system in which it is impossible to distinguish component parts.
E. Homogeneous system which consists of one component.
ANSWER: B
3. What compounds cannot form solution?
A. Silicon (II) oxide and water.
B. NaOH and water.
C. Aluminum and copper.
D. NaCl and water.
E. Sugar and water.
ANSWER: A
4. How many mole of solute is dissolved in 4 litres of solution with a concentration 1 mole per 1 liter of
solution?
A. 0.4 mole.
B. 1 mole.
C. 4 mole.
D. 3 mole.
E. 2 mole.
ANSWER: C
5. What is a mole?
A. It is the ratio of the mass solute to the mass of solution mass of a solvent
B. It is the quantity grams of solute which percentage in 100 g of solution.
C. The quantity of matter contains such quantity atoms, molecules, ions, as is atoms in 0,012 kgs of an
isotope Carbon 12C.
D. The ratio of mass compound to numbers mole compound.
E. The ratio of the number of moles of that component to the total number of moles of all components.
ANSWER: C
6. Percentage by weight (mass) or mass percent is ...........
A. The ratio between the volume solute and total volume of solution.
B. The quantity of one component of a solution expressed as a percentage of the total mass.
C. The number of moles of solute dissolved per liter of solution.
D. The number of moles of solute dissolved per kilogram of solvent.
E. Quantity gram-equivalent of solute per one liter of solution.
ANSWER: B
7. Mass concentration, titer is ……..
A. The ratio between the volume solute and total volume of solution.
B. Number grams of solute per one milliliter of solution.
C. The number of moles of solute dissolved per liter of solution.
D. The number of moles of solute dissolved per kilogram of solvent.
E. Quantity gram-equivalent of solute per one liter of solution.
ANSWER: B
8. Molarity, or molar concentration is …….
A. The ratio between the volume solute and total volume of solution.
B. Number grams of solute per one milliliter of solution.
C. The number of moles of solute dissolved per liter of solution.
D. The number of moles of solute dissolved per kilogram of solvent.
E. Quantity mole-equivalent of solute per one liter of solution.
ANSWER: C
9. What is a molar concentration (a molarity)?
A. The ratio between of the mole of solute and the total mole of solution.
B. The quantity of one component of a solution expressed as a percentage of the total mass.
C. The number of moles of solute dissolved per liter of solution.
D. The number of moles of solute dissolved per kilogram of solvent.
E. Quantity mole-equivalent of solute per one liter of solution.
ANSWER: C
10. What is a normal concentration (a normality)?
A. The ratio between of the mole of solute and the total mole of solution.
B. The quantity of one component of a solution expressed as a percentage of the total mass.
C. The number of moles of solute dissolved per liter of solution.
D. The number of moles of solute dissolved per kilogram of solvent.
E. Quantity mole-equivalent of solute per one liter of solution.
ANSWER: E
11. What is a percentage by weight (mass)?
A. The ratio between of the mole of solute and the total mole of solution.
B. The quantity of one component of a solution expressed as a percentage of the total mass.
C. The number of moles of solute dissolved per liter of solution.
D. The number of moles of solute dissolved per kilogram of solvent.
E. Quantity mole-equivalent of solute per one liter of solution.
ANSWER: B
12. When cells are placed in а solution with а lower solute concentration (hypotonic solution), water will move
into the cells. Red blood cells, for example, will swell and rupture in а process called:
A. Plasmolysis.
B. Osmosis.
C. Hemolysis.
D. Solubility.
E. Diffusion.
ANSWER: C
13. In hypertonic solutions, those with higher solute concentrations, cells shrivel because there is а net
movement of water out of the cell. The shrinkage of red blood cells in hypertonic solution is called:
A. Plasmolysis.
B. Osmosis.
C. Hemolysis.
D. Solubility.
E. Diffusion.
ANSWER: A
14. Colligative properties is all except:
A. Vapor-pressure lowering.
B. Boiling-point elevation.
C. Freezing-point depression.
D. Osmotic pressure.
E. Mole mass.
ANSWER: E
15. Hemolysis is:
A. In hypertonic solutions, those with higher solute concentrations, cells shrivel because there is а net
movement of water out of the cell. The shrinkage of red blood cells in hypertonic solution.
B. When cells are placed in а solution with а lower solute concentration (hypotonic solution), water will
move into the cells. Red blood cells, for example, will swell and rupture.
C. The method for determination of molar mass of compounds by freezing-point depression.
D. The solubility of a gas dissolved in a liquid is proportional to the partial pressure of the gas above the
liquid.
E. The spontaneous mixing of the particles of the solute (present in the solution) and the solvent (present
above the solution) to form а homogeneous mixture.
ANSWER: B
16. Plasmolysis is:
A. In hypertonic solutions, those with higher solute concentrations, cells shrivel because there is а net
movement of water out of the cell. The shrinkage of red blood cells in hypertonic solution.
B. When cells are placed in а solution with а lower solute concentration (hypotonic solution), water will
move into the cells. Red blood cells, for example, will swell and rupture.
C. The method for determination of molar mass of compounds by freezing-point depression.
D. The solubility of a gas dissolved in a liquid is proportional to the partial pressure of the gas above the
liquid.
E. The spontaneous mixing of the particles of the solute (present in the solution) and the solvent (present
above the solution) to form а homogeneous mixture.
ANSWER: A
17. Diffusion is:
A. In hypertonic solutions, those with higher solute concentrations, cells shrivel because there is а net
movement of water out of the cell. The shrinkage of red blood cells in hypertonic solution.
B. When cells are placed in а solution with а lower solute concentration (hypotonic solution), water will
move into the cells. Red blood cells, for example, will swell and rupture.
C. The method for determination of molar mass of compounds by freezing-point depression.
D. The solubility of a gas dissolved in a liquid is proportional to the partial pressure of the gas above the
liquid.
E. The spontaneous mixing of the particles of the solute (present in the solution) and the solvent (present
above the solution) to form а homogeneous mixture.
ANSWER: E
18. Isotonic solutions are:
A. Those which have lest osmotic pressure then blood plasma.
B. Those which have the same osmotic pressure as blood plasma.
C. Those which have the greater osmotic pressure then blood plasma
D. That solution in which the concentration of solute is greater than in a saturated solution.
E. Solution in which the concentration of solute is less than in a saturated solution.
ANSWER: B
19. Hypertonic solutions are:
A. Those which have lest osmotic pressure then blood plasma.
B. Those which have the same osmotic pressure as blood plasma.
C. Those which have the greater osmotic pressure then blood plasma
D. Solution in which the concentration of solute is greater than in a saturated solution
E. Solution in which the concentration of solute is less than in a saturated solution.
ANSWER: C
20. Hypotonic solutions are:
A. Those which have lest osmotic pressure then blood plasma.
B. Those which have the same osmotic pressure as blood plasma.
C. Those which have the greater osmotic pressure then blood plasma
D. Solution in which the concentration of solute is greater than in a saturated solution
E. Solution in which the concentration of solute is less than in a saturated solution.
ANSWER: A
21. This formula PV= nRT is formula of:
A. Henry's law equation
B. Freezing point determination equation.
C. Van’t Hoff law equation/
D. Raoult's law equation.
E. Boiling-point elevation equation.
ANSWER: C
22. Colligative property is:
A. Temperature.
B. Boiling-point elevation.
C. Volume.
D. Mole.
E. Molecule weight.
ANSWER: B
23. Physiological solution of sodium chloride is solution, which percent by weight is:
A. 0.89 %.
B. 2.61 %.
C. 1.63 %.
D. 8.9 %.
E. 98 %.
ANSWER: A
24. Colligative properties is:
A. Temperature.
B. Normality.
C. Volume.
D. Osmotic pressure.
E. Molecule weight.
ANSWER: D
25. Neutralization reaction is the reaction between:
A. Strong acids.
B. Weak acids.
C. Acid and base.
D. Weak bases.
E. Strong base.
ANSWER: C
26. What compounds is formed in neutralization reaction?
A. Strong acids.
B. Weak acids.
C. Acid and base.
D. Salt and water.
E. Strong base.
ANSWER: D
27. For determination of рН solution is used:
A. Voltmiter.
B. Centrifuger.
C. Photoelectrocolorimetr.
D. рН-meter.
E. Calorimeter.
ANSWER: D
28. What is color of methyl orange in acidic medium?
A. Red.
B. Blue.
C. Violet.
D. Orange.
E. Colorless.
ANSWER: A
29. What is color of methyl red (indicator) in basic medium?
A. Red.
B. Blue.
C. Yellow.
D. Orange.
E. Colorless.
ANSWER: C
30. What is color of phenolphalein in basic medium?
A. Yellow.
B. Blue.
C. Orange.
D. Crimson.
E. Colorless.
ANSWER: D
31. Acid - base titration indicators is:
A. Weak acids or weak bases.
B. Strong acids.
C. Strong bases.
D. Derivative of mineral acids.
E. Salt.
ANSWER: A
32. What is color of litmus in basic medium?
A. Yellow.
B. Blue.
C. Orange.
D. Crimson.
E. Colorless.
ANSWER: B
33. рН = 6.5. What is medium of solution:
A. Strong basic.
B. Neutral
C. Weak acidic.
D. Weak-basic.
E. Strong acidic.
ANSWER: C
34. What is composition of phosphate buffer solutions?
A. HHb/Hb-.
B. HHbO2/HbO2-.
C. H2PO4-/HPO42-.
D. H2CO3/HCO3-.
E. NH3/NH4+
ANSWER: C
35. What is composition of oxihemoglobin buffer solutions?
A. HHb/Hb-.
B. HHbO2/HbO2-.
C. H2PO4-/HPO42-.
D. H2CO3/HCO3-.
E. NH3/NH4+
ANSWER: B
36. What is composition of bicarbonate buffer solutions?
A. HHb/Hb-.
B. HHbO2/HbO2-.
C. H2PO4-/HPO42-.
D. H2CO3/HCO3-.
E. NH3/NH4+
ANSWER: D
37. What is composition of ammonia buffer solutions?
A. HHb/Hb-.
B. HHbO2/HbO2-.
C. H2PO4-/HPO42-.
D. H2CO3/HCO3-.
E. NH3/NH4+
ANSWER: E
38. What is composition of hemoglobin buffer solutions?
A. HHb/Hb-.
B. HHbO2/HbO2-.
C. H2PO4-/HPO42-.
D. H2CO3/HCO3-.
E. NH3/NH4+
ANSWER: A
39. What is composition of acetic buffer solutions?
A. CH3COOH/CH3COO-.
B. H2CO3/HCO3-.
C. HHbO2/HbO2-.
D. H2PO4-/HPO42-.
E. NH3/NH4+
ANSWER: A
40. What is composition of protein buffer solutions?
A. HHb/Hb-.
B. H2PO4-/HPO42-.
C. NH2RCOOH/NH2RCOOD. HHbO2/HbO2-.
E. H2CO3/HCO3-.
ANSWER: C
41. Blood buffer solution is all except:
A. HHb/Hb-.
B. HHbO2/HbO2-.
C. H2PO4-/HPO42-.
D. H2CO3/HCO3-.
E. NH3/NH4+
ANSWER: E
42. Blood buffer solution is:
A. CH3COOH/CH3COO-.
B. H2CO3/HCO3-.
C. HCl/Cl-.
D. H2SO4/HSO4-.
E. NH3/NH4+.
ANSWER: B
43. What is value of рН blood human body?
A. 7,93-9,45.
B. 7,36-7,45.
C. 6,20-7,30.
D. 2,10-4,15.
E. 5,70-6,74.
ANSWER: B
44. The amount of strong acid or base, in moles, that must be added to 1 liter of the solution to change its pH
by one unit is called:
A. Water product.
B. The concentration of H+.
C. Heat capacity.
D. The buffer capacity of а solution.
E. Acidity of solution.
ANSWER: D
45. What factor is influence for pH of buffer solution:
A. Water product.
B. Ratio between solution component concentrations.
B. Heat capacity.
C. Temperature of solution.
D. Atmospheric pressure.
ANSWER: B
46. The capacity of а buffer systems depends on:
A. Name of components.
B. Temperature solution.
C. Pressure.
D. The molar concentration of the acid-conjugate base pair.
E. Concentration of water.
ANSWER: D
47. The capacity of а buffer solution depends on:
A. The ratio of acid-conjugate base pair concentrations.
B. Name of components.
C. Temperature solution.
D. Pressure.
E. Concentration of water.
ANSWER: A
48. Buffer capacity is directly proportional to the…….
A. Temperature solution.
B. Pressure.
C. Concentration of the buffer solution components.
D. Pressure.
E. Concentration of water.
ANSWER: C
49. What solution has the great buffer capacity?
A. 10/20.
B. 5/10.
C. 50/100.
D. 20/40.
E. 200/400.
ANSWER: E
50. What solution has the great buffer capacity?
A. 10/20.
B. 5/10.
C. 50/50.
D. 20/40.
E. 7/3.
ANSWER: C
51. How рН of buffer solution is changed, if add 50 mls of water?
A. Once.
B. Twice.
C. Three times.
D. Four times.
E. Do not change
ANSWER: E
52. рН =9 of solution. What is acidity of this solution?
A. Strong basic.
B. Neutral.
C. Weak acidic.
D. Weak basic.
E. Strong acidic.
ANSWER: A
53. What is water product value?
A. Кw = 10-7.
B. Кw = 107.
C. Кw = 10.
D. Кw = 10-14.
E. Кw = 10-10.
ANSWER: D
54. The water products this:
A. Products of solubility.
B. Sum of concentration of ions of Н+ and ОН-.
C. Change of concentrations.
D. Products of concentration of hydrogen and hydroxide ions.
E. Difference of concentration of ions of Н+ and ОН-.
ANSWER: D
55. The oxidizing-restoration reactions are reaction in which:
A. Molecules are dissociated into ions.
B. Acid-basic interaction.
C. Change of oxidation number of elements.
D. Hydrolyzed of salt.
E. Dissociate of acids.
ANSWER: C
56. What formula is used for calculate pOH of solution?
A. КW = [Н+][ОН-].
B. рН = - lg[Н+].
C. рН = - lg[ОН-].
D. рН = lg[Н+] lg[ОН-].
E. рН = - lg[Н+] lg[ОН-].
ANSWER: C
57. pH of neutral medium is:
A. pH = 2.
B. pH = 10.
C. pH = 4.
D. pH = 7.
E. pH = 12.
ANSWER: D
58. рН of basic medium:
A. рН = - 7.
B. рН < 7.
C. рН = 7.
D. рН >7.
E. рН < - 7.
ANSWER: D
59. What concentration hydrogen ion is in basic medium:
A. More then10-7.
B. Lest then10-7.
C. 10-7.
D. 10-1.
E. 10-4.
ANSWER: B
60. What method is you used for determination an acid concentration in solution?
A. Acid-base titration.
B. Chelatometry.
C. Oxidation - reduction titration.
D. Precipitation.
E. Sedimentation.
ANSWER: A
61. What method are you used for determination total hardness of water?
A. Acid-base titration.
B. Chelatometry.
C. Precipitation.
D. Oxidation - reduction titration.
E. Sedimentation.
ANSWER: B
62. What method are you used for determination concentration of NaCl in solution?
A. Acid-base titration.
B. Chelatometry.
C. Precipitation.
D. Oxidation - reduction titration.
E. Sedimentation.
ANSWER: C
63. What method are you used for determination concentration of potassium permanganate in solution?
A. Acid-base titration.
B. Chelatometry.
C. Precipitation.
D. Oxidation - reduction titration.
E. Sedimentation.
ANSWER: D
64. It is used as titrant in acid-base titration such compound:
A. KCl.
B. NaHCO3.
C. Na2SO4.
D. HCl.
E. CuOH.
ANSWER: D
65. As titrant in acid-base titration is used:
A. HCl, NaOH, H2SO4, KOH.
B. BaCl2, NaI, KCl.
C. Na2SO4, KNO4, H2SO4.
D. CuOH, CoCl.
E. K2SO4, KMnO4.
ANSWER: A
66. In the titrimetric analysis use the method of neutralization. What titrants are used in this method?
A. NaNO3, Na2S2O3.
B. AgNO3, BaCl2.
C. NaOH, HCl.
D. KI, K2Cr2O7.
E. KI, KMnO4.
ANSWER: C
67. What indicators are used in acid-base titration?
A. Weak bases and weak acid.
B. AgNO3, BaCl2.
C. NaOH, HCl.
D. KI, K2Cr2O7.
E. KI, KMnO4.
ANSWER: A
68. Temporal hardness of water this:
A. Amount of acids in solution.
B. Amount of calcium and magnesium sulfates and chlorides.
C. Amount of calcium and magnesium bicarbonate, sulfates and chlorides and other salt.
D. Amount of calcium and magnesium bicarbonate.
E. Amount of potassium carbonate.
ANSWER: D
69. Permanent hardness of water this:
A. Amount of acetic asid in solution.
B. Amount of calcium and magnesium sulfates and chlorides.
C. Amount of calcium and magnesium bicarbonate, sulfates and chlorides and other salt.
D. Amount of calcium and magnesium bicarbonate.
E. Amount of potassium carbonate.
ANSWER: B
70. Total hardness of water this:
A. Amount of oxalic acid in solution.
B. Amount of calcium and magnesium sulfates and chlorides.
C. Amount of calcium and magnesium bicarbonate, sulfates and chlorides and other salt.
D. Amount of calcium and magnesium bicarbonate.
E. Amount of potassium carbonate.
ANSWER: C
71. The method of chelatometry is used for determination concentration of :
A. Acids.
B. Metal ions.
C. Bases.
D. Carboxylic acids.
E. Anions.
ANSWER: B
72. Water hardness is ordinarily determined by........
A. HCl.
B. NaOH.
C. KMnO4.
D. CuSO4.
E. EDTA.
ANSWER: E
73. As titrant in precipitation titration is used:
A. NaCl.
B. KMnO4.
C. AgNO3.
D. CaSO4.
E. KBr.
ANSWER: C
74. As titrant in argentometry is used:
A. AgNO3.
B. KMnO4.
C. NaCl.
D. CaSO4.
E. KBr.
ANSWER: A
75. Solutions of permanganate as titrant using in:
A. Acid-base titration.
B. Chelatometry.
C. Precipitation.
D. Sedimentation.
E. Oxidation - reduction titration.
ANSWER: E
76. What elements are p-elements?
A. Sodium, Potassium.
B. Calcium, Aluminum.
C. Fluorine, Chlorine.
D. Lithium, Beryllium.
E. Iron, Manganese.
ANSWER: C
77. What elements are s-elements?
A. Sodium, potassium.
B. Vanadium, Aluminum.
C. Fluorine, Chlorine.
D. Bromine, Iodine.
E. Iron, Manganese.
ANSWER: A
78. What element is macro element?
A. Hg.
B. Mn.
C. Cu.
D. Br.
E. Ca
ANSWER: E
79. What element is micro element?
A. F.
B. Cl.
C. Ca.
D. O.
E. C.
ANSWER: A
80. Sodium dihydrogenphosphate is:
A. Na3PO4.
B. Na2HPO4.
C. NaH2PO4.
D. Na3PO3.
E. NaH2PO5.
ANSWER: C
81. What micro element is in erythrocytes?
A. Sodium.
B. Vanadium.
C. Fluorine.
D. Bromine.
E. Iron.
ANSWER: E
82. What element is in bones?
A. Sodium.
B. Vanadium.
C. Fluorine.
D. Calcium.
E. Iron.
ANSWER: C
83. What reagent is used for determination Ca2+ in solution?
A. (NH4)2C2O4.
B. NaBr.
C. HCl.
D. HNO3.
E. KCl.
ANSWER: A
84. Sodium is:
A. s - element.
B. d - element.
C. f - element.
D. p - element.
E. g - element
ANSWER: A
85. Iron is:
A. s - element.
B. d - element.
C. f - element.
D. p - element.
E. g - element.
ANSWER: B
86. Calcium is:
A. s - element.
B. d - element.
C. f - element.
D. p - element.
E. g - element.
ANSWER: A
87. Bromine is:
A. s - element.
B. d - element.
C. f - element.
D. p - element.
E. g - element.
ANSWER: D
88. Zinc is:
A. s - element.
B. d - element.
C. f - element.
D. p - element.
E. g - element.
ANSWER: B
89. What ligand name, which is in following complex compound K2[Pt C16]?
A. Potassium.
B. Platinum.
C. Chloro.
D. Chloral.
E. Platinate.
ANSWER: C
90. Coordination number of Ni in the K4[Ni(CN)6]:
A. 1.
B. 2.
C. 8.
D. 4.
E. 6.
ANSWER: E
91. Osmotic pressure of blood is:
A. 8.9 atm.
B. 7.0 atm.
C. 1 atm.
D. 4.7 atm.
E. 7.7 atm.
ANSWER: E
92. Calcium has different biological functions. What main function is essential for calcium?
A. In blood coagulation.
B. Activates the conversion of prothrombin to thrombin.
C. In milk clotting.
D. Bones and teeth formation.
E. In muscle contraction.
ANSWER: D
93. What element with calcium is present in bones?
A. Copper.
B. Cobalt.
C. Zinc.
D. Chlorine.
E. Phosphorus.
ANSWER: E
94. What element with phosphorus is present in teeth?
A. Copper.
B. Cobalt.
C. Calcium.
D. Chlorine.
E. Zinc.
ANSWER: C
95. Qualitative reaction on the CaCl2 is reaction with:
A. NH4NO3.
B. NH4Br.
C. NH4Cl.
D. (NH4)2C2O4.
E. (NH4)2SO4.
ANSWER: D
96. Complex compounds are all except:
A. [Cu (NH3)4] SO4.
B. [Co(NH3)4(H2O)Cl]Cl2.
C. K2[Pt C16].
D. CuSO4.
E. [Sn(NH3)2Cl2]Cl2.
ANSWER: D
97. Complex compound is:
A. Cu3(PO4)2.
B. CoCl3.
C. K2[Pt C16].
D. CuSO4.
E. SnCl4.
ANSWER: C
98. Physiological solution is:
A. Those solutions, which have lest osmotic pressure then blood plasma.
B. Those solutions, which have the same osmotic pressure as blood plasma.
C. Those solutions, which have the greater osmotic pressure then blood plasma.
D. Solution is one in which the concentration of solute is greater than its concentration in a saturated
solution.
E. Solution in which the concentration of solute is less than its concentration in a saturated solution.
ANSWER: B
99. The partical size of true solution is:
A. The less than 10-9 m.
B. 10-7-10-9 m.
C. The more then 10-5 m.
D. 10-5-10-3 m.
E. 10-7-10-5 m.
ANSWER: A
100. Mass percent is:
A. Mass of solute which is in 100 g of solution.
B. Mass of solute which is in 100 g of solvent.
C. Amount mole equivalents of solute which is in 1 liter of solution.
D. Amount moles of solute which is in 100 g of solution.
E. Amount moles of solute which is in 100 g of solvent.
ANSWER: A