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# Which of the following can be enthalpy of neutralisation of a weak acid and a strong base?

(a) -57.1 KJ
(b) -58.1 KJ
(c) -56.1 KJ
(d) -114.2 KJ

The magnitude of enthalpy of neutralsation of weak acid and strong base is always less than -57.1 KJ. Thus it can be -56.1 KJ.