1. Tardigrade
  2. Question
  3. Chemistry
  4. The heats of neutralisation of CH3 COOH , HCOOH , HCN and H 2 S are - 13.2, - 13.4, - 2.9 and - 3.8 kCal per equivalent respectively. Arrange the acids in increasing order of acidic strength.

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Q. The heats of neutralisation of $CH_3 COOH , HCOOH , HCN$ and $H _{2} S$ are - $13.2, - 13.4, - 2.9$ and - $3.8 \,kCal$ per equivalent respectively. Arrange the acids in increasing order of acidic strength.

BITSATBITSAT 2014

Solution:

The greater the (negative value) of heat of neutralisation, the more is the strength of the acid. Hence,
$HCOOH > CH_3COOH > H_2S > HCN$