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- ]?