1.

Assertion : The enthalpies of neutralisation of strong acids and strong bases are always same. Reason : Neutralization is heat of formation of water.

Answer»

If the ASSERTION and reason are true and the reason is the CORRECT explanation of the assertion
If both assertion and reason are true but reason is not the correct explanation of the assertion
If assertion is true but reason is false
If the assertion and reason both are false.

Solution :The enthalpies of NEUTRALISATION of strong acids and strong bases are same they are 13.7 kcal. The reason is that it is heat of formation of WATER from `H^(+)` and `OH^(-)` ions.`H^(+)+OH^(-)rarrH_(2)O, DeltaH=-13.7 kcal`.THUS, both assertion and reason are true.


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