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Preparations and Uses of Sodium Carbonate

The addition ...

Question

The addition of solid sodium carbonate to pure water causes

A

An increase in hydronium ion concentration

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B

An increase in alkalinity

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C

No change in acidity

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D

A decrease in hydroxide ion concentration

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Solution

The correct option is B
An increase in alkalinity

Adding $N a_{2} C O_{3}$ to water makes the solution basic and hence pH increases more than 7.

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Preparations and Uses of Sodium Carbonate

Standard XII Chemistry

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