Explain why heat of neutralisation of strong acid and weak base is less than `57.1 kJ`.

Assertion(A) : The value of enthalpy of neutralisation of strong acid and weak base is numerically less than 57.1 kJ . Reason(R ) : All the H^(+) ions furnished by 1g equivalent of a strong acid are not completely neutralized by the OH^(-) ions from the weak base.

Heat of neutralisation of a strong acid and strong base is always.

Assertion : The heat of neutralisation for a strong acid and a weak base is always equal to -57.1 kJ. Reason : One gram equivalent of a strong acid always neutralises one gram equivalent of a weak base.

What is Arrhenius concept of acids and bases ? On the basis of this concept explain why heat of neutralisation for a strong acid and a strong base is always constant.

The heat of neutralisation of a strong acid by a strong base :

Given that, heat of neutralisation of strong acid and strong base is 57.1 kJ. Calculate the heat produced when 0.25 mole of HCl is neutralised with 0.25 mole of NaO in aqueous solution:

Why is heat of neutralisation for a strong acid and strong base constant ?