1.

HCNoverset("Hydrolysis")rarracid -1 CH_(3)C Cl_(3)overset("Hydrolysis")rarr acid-2 The heat of ionisation of HCN and acid-2 respectivley are x kcal and y kcal [x lt y]. The order of their pK_(a) values will be

Answer»

`(pK_(a))_(HCN)gt(pK_(a))_("acid-2")`
`(pK_(a))_(HCN(=(pK_(a))_("acid-2")`
`(pK_(a))_(HCN)lt(pK_(a))_("acid-2")`
All of the above

Solution :Acid-2 is ACETIC acid. HCN is a weaker acid as its HEAT of inoisation is LESS than acetic acid. Hence,
`(pK_(a))_(HCN)gt(pK_(a))_("acid-2")`


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