Question

Comment on molar heat value for strong acid compared to literature value

Answer 1

the literature value says that enthalphy of neutralisation is 57.1 KJ/mol for strong acid and stong base reaction irrespective of strong acid or strong base being used.
This is because it is assumed that strong acid and strong base are completely ionised in solution and hence net reaction is only,
H+ + OH- --> H2O

But is reality all strong acid ot base are bnot completely ionized and some energy is required to ionize them . Thus actuall enthalphy of neutralisation is little less than 57.1 KJ/mol