TargetIIT

Q1 If ΔH[ss]ionisation[/ss] (HCN)=45.2 kJ/mol and  ΔH[ss]ionisation [/ss](CH3COOH)=2.1 kJ/mol.Then whats relation ship between pKa of both ??

I am getting pKa(HCN)=45.2/2.1  pKa(CH3COOH)


Q2 Find change in deg of disociation be addn of 8.2 gm of CH3COONa in 1L 0.1M CH3COO

Q3 The entalpy of neutralization of HCl by NaOH is -55.9Kj/mol. whereas of HCN by NaOH is -12.1 Kj/molThe enthalpy of ionisaton of HCN is ??

Q3. 55.9-12.1

if it was strong acid then -55.9 kJ energy wud have evolved

But some energy is spent to ionise it

ya thats fine ..but sign is posiitve or negative ????

postive (ionisation is endothermic)