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Question

Match List-I with List-II.
List-IList-II(P)Fe(NO3)3(aq)(1)Only cationic hydrolysis(Q)KClO4(aq)(2)Only anionic hydrolysis(R)RCOONa(aq)(3)Both cationic as anionic hydrolysis(S)NH4CN(aq)(4)No hydrolysis
  1. PQRS1234
  2. PQRS1423
  3. PQRS2143
  4. PQRS4321


Solution

The correct option is B PQRS1423
Fe(NO3)3 is a salt of weak base Fe(OH)3 and strong acid HNO3
So, the hydrolysis of this will make the solution slightly acidic and known as cationic hydrolysis.

KClO4 is a salt of strong acid KOH and strong base HClO4.
So, there is no net hydrolysis of the salt.

RCOONa is a salt of weak acid RCOOH and strong base NaOH.
So, the hydrolysis of this will make the solution slightly basic and known as anionic hydrolysis.

NH4CN is a salt of weak acid HCN and weak base NH4OH.
So, the hydrolysis of this salt is both cationic and anionic hydrolysis.

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