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COMEDK2020ChemistryIonic Equilibrium

Which of the following salts on being dissolved in water gives pH >7 at 25^ C ?

Options

  1. ANH ₄ CN
  2. BNH ₄ Cl
  3. CKNO ₃
  4. DKCN

Correct answer

D. KCN

Step-by-step solution

KCN is a sait of strong base ( KOH ) and weak acid HCN ) , KCN + H ₂ O Strung base KOH + Weak aesd HCN pH of the solution is greater than 7 at 25^ C .

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