Calculate the pH of a 0.0018 M solution of Mg(OH)₂ whose temperature is 25.0 °C.

Name: Calculate the pH of a 0.0018 M solution of Mg(OH) 2 whose temperature is 25.0 °C.
Brand: Quizplus
Rating: 4.8 (50 reviews)

Question

Quizplus · Accepted Answer

Mg(OH)₂ is a strong base that dissociates completely in water to produce OH⁻ ions. The concentration of OH⁻ ions is 2 * 0.0018 M = 0.0036 M. The pOH is -log(0.0036) = 2.44. Therefore, the pH is 14 - 2.44 = 11.56, which is closest to 11.55.

Calculate the PH of a 0