CHM 1025C Module Eight-Solutions Sample Exam

 

Part L: pH Scale Calculations (Section 15.8-15.9) 10 points

What is the pH and pOH of the following solutions:

 

pOH = 14.00 pH Kw = 1.00 x 10-14 = [H3O1+][OH1-]

 

 

(1) 0.0100 M HCl

 

 

 

 

 

 

 

 

(2) 0.0055 M Mg(OH)2

 

 

 

 

 

 

 

 

(3) The pH of vinegar is 2.85, calculate the [H3O1+]:

 

 

 

 

 

 

 

 

 

 

 

(4) Easy Off Oven Cleaner has a pH of 11.70. What is the [H3O1+] and [OH 1- ]?