Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

Calculate the pH of a 0.0050 M solution of Ba(OH)₂, a strong base.
Options
A 11.70
B 12.00
Correct Answer
C 12.30
D 2.00
Correct Answer

Option B is the correct answer.

Detailed Explanation

[OH⁻] = 2 × 0.0050 = 0.010 M. pOH = -log(0.010) = 2.00. pH = 14.00 - 2.00 = 12.00.

Hint

Remember that Ba(OH)₂ produces 2 OH⁻ ions per formula unit.

Question Info