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6.1. Equilibrium - 1 (chemical Equilibrium) — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry6.1. Equilibrium - 1 (chemical Equilibrium)1 Mark
MCQ
Consider the reaction $HC{N_{(aq)}} \Leftrightarrow H_{(aq)}^+ + CN_{(aq)}^ - $. At equilibrium, the addition of $CN_{(aq)}^ - $ would
  • A
    Reduce $HC{N_{(aq)}}$ concentration
  • ✓
    Decrease the $H_{(aq)}^ + $ ion concentration
  • C
    Increase the equilibrium constant
  • D
    Decrease the equilibrium constant
✓

Answer

Correct option: B.
Decrease the $H_{(aq)}^ + $ ion concentration
(b) At equilibrium, the addition of ${(CN)^ - }$would decrease the $({H^ + })$ ion concentration to produce more and more $HCN$ to nullified the increase of $C{N^ - }_{aq}$.

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