A Saturated Aqueous Solution of Calcium Hydroxide Is Approximately 0

question 7

Multiple Choice

A saturated aqueous solution of calcium hydroxide is approximately 0.13% calcium hydroxide, by mass, and has a density of 1.02 g ml-1. What is the pH of such a solution?

• A) 11.95
• B) 12.25
• C) 12.55
• D) 12.75
• E) 13.00

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Definitions:

Upwelling

The oceanographic phenomenon that occurs when deep, cold, nutrient-rich water rises towards the surface, promoting the growth of plankton and supporting marine ecosystems.

Phytoplankton

Microscopic plant-like organisms that float in water bodies; they are the primary producers in aquatic ecosystems.

Radioactive Isotope

An isotope of an element that has an unstable nucleus and emits radiation during its decay to a stable form.