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Answer the following question Guess, ho...

Answer the following question
Guess, how do you test acetic acid, if there is no availability of indicators ?

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If there is no availability of indicator, we can test the acetic acid in the following way.
1. We know that acids react with metal carbonates and produce carbon dioxide gas.
If we add baking soda to acetic acid it produces `CO_2` gas.
This makes the reaction bubble and expand.
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