CHEM 1212 Module Eleven-Chapter 17 Name:____________

Part D: pH Scale Calculations 10 points

What is the pH and pOH of the following solutions:

(1) 0.000675 M HCl

(2) 0.0025 M Ca(OH)₂

(3) The pH of a cup of coffee is 4.32, calculate the [H₃O^{+1 ]}:

(4) A detergent solution has a pH of 11.45. What is the [OH ^1- ]?

CHEM 1212 M-11 Sample Exam

Part E: Equilibria of Acids and Bases Calculations 10 points

Write the appropriate equilibrium constant expression for the following reaction::

Calculate the pH of a solution of pyridine that has 8.0 grams of pyridine dissolved in 250 ml of solution

C₅H₅N + H₂O <=======> + OH ^1- + C₅H₅N⁺¹

Part F: Hydrolysis Calculations 10 points

What is the pH of the bleach solution which is 5.25% by weight Sodium hypochlorite?

The K_a of Hypochlorous acid is 3.5 x 10^-8