CHEM 5013 - Applied Chemical Principles
Suggested problems for Quiz on Thursday November 1
1. For each of the following ionic compounds, write the correct chemical formula and
decide if it is soluble in water. (Use solubility table in class notes, textbook, or lab manual)
a. Sodium carbonate
Formula
H2O Soluble? YES
NO
b. Beryllium hydroxide
Formula
H2O Soluble? YES
NO
c. Lead (IV) phosphate
Formula
H2O Soluble? YES NO
d. Potassium sulfide
Formula
H2O Soluble? YES
NO
2. Write the BALANCED molecular equation, complete ionic equation and net ionic
equation when you mix together each of the following pairs of aqueous solutions:
a. Ammonium carbonate and Magnesium chloride
ME:
CIE:
NIE:
b. Potassium sulfate and Sodium hydroxide
ME:
CIE:
NIE:
3. Identify all of the spectator ions in each of the reactions in question #2:
a.
b.
4.
Calculate the molar mass of each of the following to 3 significant figures:
a. Ammonium Phosphate
b. Cobalt (II) Chlorate
c. Iodine Tetrachloride
5.
How many atoms and moles of atoms (or ions) are in one mole of each of the following
compounds?
a. Magnesium Chloride
b. Ammonium Hydroxide
c. Oxygen Gas
6. What is the mass in grams for each of the following?
a. 5.00 moles of Silver Phosphate
b. 7.50 moles of Diphosphorus Pentoxide
7. a. How many atoms are in 4.55 moles of aluminum metal?
b. How many atoms are in 4.55 moles of copper metal?
c. How many atoms are in 4.55 moles of hydrogen gas (remember it is a molecule!)?
d. How many molecules are in 4.55 moles of hydrogen gas?
8. A 175.5 gram sample of water contains how many water molecules?
9. You have a sample that contains 5.75 x 1035 molecules of water.
a. How many moles of water is this sample?
b. What is the mass in grams of this water sample?
10. How many moles are present in each of the following amounts:
a. 34 grams of Copper (II) Sulfate
b. 75 grams of Sulfur Dioxide
11. What is the mass in grams of 5.00 x 1023 atoms of Gold?