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pH in Digestive System

Which of the ...

Question

Which of the following is an acid-base reaction and releases a gas that turns lime water milky?

C a S O_{4} + H C l \to

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C H_{3} C O O H + H C l \to

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N a H C O_{3} + H C l \to

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N a O H + H C l \to

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Solution

The correct option is C $N a H C O_{3} + H C l \to$
$N a H C O_{3}$ is basic and reacts with acid to form a salt, water and carbon dioxide. Carbon dioxide gas turns lime water milky.

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