In which of the following test tubes, th...

In which of the following test tubes, the gas on evolution extinguishes a burning matchstick?

III and IV

I and II

I and III

II and IV

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The correct Answer is:

Acetic acid reacts metal carbonates and metal hydrogen carbonates to produce `CO_(2)` gas which extinguishes burning matchstick.
`2CH_(3)COOH+Na_(2)CO_(3) to 2CH_(3)COONa +H_(2)O +CO_(2)`
`CH_(3)COOH +NaHCO_(3) to CH_(3)COONa +H_(2)O +CO_(2)`

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