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KCET2007ChemistryIonic Equilibrium

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

Options

  1. AKCN
  2. BKNO ₃
  3. CNH ₄ Cl
  4. DNH ₄ CN

Correct answer

A. KCN

Step-by-step solution

KCN is a salt of weak acid and strong base hence, on being dissolved in water it gives basic solution i.e. pH >7 at 25^ C . 2 H ₂ SO ₄+2 P ₂ O ₅ 2 SO ₃+ 4 HPO ₃ Sulphur trioxide

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