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 K_w = 1.00 x 10^-14 = [H₃O¹⁺][OH^1-]

(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- ]?