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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

What ions are found in hard water? What happens when water is “softened”?

Interpretation Introduction

Interpretation: The ions that are found in hard water are to be stated. The state of water after it has been softened is to be stated.

Concept introduction: The water that contains high concentration of minerals is known as hard water.

To determine: The ions that are found in hard water; state of water after it has been softened.

Explanation

Explanation

Hard water contains high concentration of mineral ions. These ions are Ca2+ and Mg2+ .

These ions form precipitates with soap.

When water is softened, the insoluble hard water ions (Ca2+,Mg2+) are replaced by soluble Na+ ion

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