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Ionic Equilibrium — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryIonic Equilibrium1 Mark
MCQ
When solid potassium cyanide is added in water then ……………
  • ✓
    pH will increase
  • B
    pH will decrease
  • C
    pH will remain the same
  • D
    electrical conductivity will not change
✓

Answer

Correct option: A.
pH will increase
$pH$ will increase
Hint:
$
KCN + H _2 O \rightleftharpoons KOH + HCN \text {. }
$
$KOH$ is a strong base and $HCN$ is a weak acid. So pH will increase.

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