STATION 1: KEY CONCEPTS 1. A solution with [H+]< [OH-] is acidic, basic, or neutral? 2. List 3 properties of acids and 3 properties of bases. 3. What is a neutral solution? 4. How are acids defined? How are bases defined? 5. What are the reactants and products common to all neutralization reactions? 6. What are indicators? 7. How is the pH of an acidic solution? Of a basic solution? A neutral solution? 8. A solution whose pH is 4 is acidic/neutral/basic? STATION 1: KEY CONCEPTS 1. A solution with [H+]< [OH-] is acidic, basic, or neutral? If [H+]< [OH-] solution is BASIC. If [H+]> [OH-] solution is acidic and if [H+]= [OH-] solution is neutral. 2. List 3 properties of acids and 3 properties of bases. Acids: tastes sour, donate H+ ions, are electrolytes, react with bases. Bases: Feel slippery, are electrolytes, accept H+ ions, react with acids. 3. What is a neutral solution? Has a pH=7. The concentrations of hydronium ion[H3O+] and hydroxide ion [OH-] are equal. 4. How are acids defined? How are bases defined? Acids are defined as substances that donate protons or hydrogen ions. Bases are defined as substances that accept protons or hydrogen ions. 5. What are the reactants and products common to all neutralization reactions? Reactants: acid and base Product: water and salt 6. What are indicators? Are substances that change color depending on the pH of the solution. 7. How is the pH of an acidic solution? Of a basic solution? A neutral solution? Acidic: pH<7 Basic: pH >7 Neutral : pH=7 8. A solution whose pH is 4 is acidic/neutral/basic? Acidic STATION 2 NAMING ACIDS AND BASES Name the following acids and bases: 1. KOH 2. NaOH 3. HF 4. HI 5. HNO2 6. H3PO4 Write the formulas for the following acids and bases: 1. magnesium hydroxide 4. sulfurous acid 2. Lithium hydroxide 3. Sulfuric acid 5. Hydrosulfuric acid 6. Carbonic acid STATION 2 NAMING ACIDS AND BASES Name the following acids and bases: 1. KOH potassium hydroxide 2. NaOH 3. HF 4. HI hydrofluoric acid 5. HNO2 nitrous acid 2. Lithium hydroxide Mg(OH)2 3. Sulfuric acid H2SO4 5. Hydrosulfuric acid H2S hydroiodic acid 6. H3PO4 phosphoric acid Write the formulas for the following acids and bases: 1. magnesium hydroxide Sodium hydroxide LiOH 4. sulfurous acid H2SO3 6. Carbonic acid H2CO3 STATION 3 Ph calculations pH= -log[H+] ; [H+] = 10-pH ; pOH=-log[OH-] ; [OH-]=10-pOH ; pH+pOH=14 [H+] [OH-] = 1.00x10-14 ; 1 L= 1000 mL M1V1=M2V2 1. What is the pH of a solution if [H3O+]= 1.7x10-3 M? 2. What is the pH of a solution if [OH-]= 0.00162? 3. What is the hydroxide ion concentration of a solution whose pH=12.40? 4. What is the [H3O+] concentration of a soft drink whose pH=3.20? STATION 3 pH calculations 1. What is the pH of a solution if [H3O+]= 1.7x10-3 M? 2.77 2. What is the pH of a solution if [OH-]= 0.00162? 11.2 3. What is the hydroxide ion concentration of a solution whose pH=12.40? 2.5x10-2M 4. What is the [H3O+] concentration of a soft drink whose pH=3.20? 6.3x10-4 M STATION 4 Neutralization pH= -log[H+] ; [H+] = 10-pH ; pOH=-log[OH-] ; [OH-]=10-pOH ; pH+pOH=14 [H+] [OH-] = 1.00x10-14 ; 1 L= 1000 mL M1V1=M2V2 1. IF 20.6 mL of 0.010 M HCl solution are required to titrate 30.0 mL of a NaOH solution, what is the concentration of the NaOH solution? 2. In the titration of 35.0mL of drain cleaner that contains NaOH, 50.08 mL of 0.409 HCl must be added to reach the equivalence point. What is the concentration of the base in the cleaner? 3. What volume of 0.250M nitric acid is needed to neutralize 17.35 mL of 0.195M KOH solution? STATION 4 Neutralization 1. IF 20.6 mL of 0.010 M HCl solution are required to titrate 30.0 mL of a NaOH solution, what is the concentration of the NaOH solution? 6.9x10-3M 2. In the titration of 35.0mL of drain cleaner that contains NaOH, 50.08 mL of 0.409 HCl must be added to reach the equivalence point. What is the concentration of the base in the cleaner? 0.585M 3. What volume of 0.250M nitric acid is needed to neutralize 17.35 mL of 0.195M KOH solution? 13.5 mL STATION 5 ACID BASE PAIRS Indicate the acid, base, conjugate acid, and conjugate base in the following reactions. 1. H2O + HF H3O+ + F- 2. NH3 + HCN NH4+ + CN- STATION 5 ACID BASE PAIRS Indicate the acid, base, conjugate acid, and conjugate base in the following reactions. 1. H2O + HF H3O+ + FB 2. A CA CB NH3 + HCN NH4+ + CNB A CA CB