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Acetic acid (ethanoic acid) and hydrochl...

Acetic acid (ethanoic acid) and hydrochloric acid react with KOH solution. The enthalpy of neutralisation of ethanoic aci is -55.8 kJ `mo^(-1)`. While that of hydrochloric acid is `-57.3 kJ mol^(-1)`. Can you think of how are these different ?

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Acetic acid is a weak acid and it does not ionise, completely. So some amount of energy is consumed in the ionisation of Acetic acid.
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Acetic acid ( ethanoic acid ) and hydrochloric acid react with KOH solution. The enthalpy of neutralisation of ethanoic acis is -55.8kJ mol^(-1) while that of hydrochloric acid is -57.3kJ mol^(-1) . Can you think of how are these different?

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