A) energy has to be spent for the total dissociation of weak acid
B) salt of weak acid and strong base is not stable
C) incomplete dissociation of weak acid
D) incomplete neutralisation of weak acid.
Correct Answer: A
Solution :
Heat of neutralisation of weak acid and strong base is less than the heatof neutralisation of strong acid and strong base due to energy has to be spent for the total dissociation of weak acid.
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