Short Answer TypeOut of the following different forms of oxygen, which will have the standard enthalpy of the formation to be 0.0 kJ; O, O2(g), O3(g), O2(l)?
Why the heat of neutralisation is less than 57.1 kJ if either the acid or the base or both are weak?
If acid or base is weak its ionisation is not complete in aqueous solutions. Therefore,a part of the energy liberated during the combination of H+ ions and OH- ions is utilised for the ionisation of weak acid or base. Hence, the heat of neutralisation is less than 57.1KJ.
Will the heat evolved be same in the following two cases?
If not, in which case it will be greater and why?
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