   Chapter 14, Problem 172CP

Chapter
Section
Textbook Problem

# Calculate [OH−] in a 3.0 ×10−7-M solution of Ca(OH)2.

Interpretation Introduction

Interpretation: The molarity of Ca(OH)2 solution is given. By using this value, the [OH] concentration in the solution is to be calculated.

Concept introduction: The base that completely dissociates into (OH) ion is known as strong base.

Explanation

Explanation

To determine: The concentration of OH ions in the given solution of Ca(OH)2 .

The concentration of [OH] ion in Ca(OH)2 solution is 6.0×107M_ .

Given

The molarity of Ca(OH)2 solution is 3.0×107M .

The Ca(OH)2 compound is a strong base. Hence, it completely dissociates into ions. The reaction is,

Ca(OH)2(s)Ca2+(aq)+2OH(aq)

Since, every one mole of Ca(OH)2 produces two moles of hydroxide (OH

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