Name sodium compound which is used for softening hard water.

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2. Acids, Bases and Salts

easy

Name the sodium compound which is used for softening hard water.

A

$ Mg(OH)_2 $

B

$ Ca{(OH)} _{3} $

C

$Al_{2} O _{3} $

D

$Na _{2} CO _{3} \cdot 10 H _{2} O$

Solution

Washing soda $\left( Na _{2} CO _{3} \cdot 10 H _{2} O \right)$ is used for softening hard water.

Standard 10

Science

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