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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
In a reversible reaction at $300\, K\, K_c > K_p$ and $\Delta H \Rightarrow  + 40\, Kcal$.  The product will be obtained in more amount on
  • A
    Decreasing pressure and temperature
  • ✓
    Increasing pressure and temperature
  • C
    Decreasing pressure and increasing temperature
  • D
    Decreasing temperature and increasing pressure
✓

Answer

Correct option: B.
Increasing pressure and temperature
b
$\mathrm{K}_{\mathrm{c}}>\mathrm{K}_{\mathrm{p}}$

$\mathrm{K}_{\mathrm{p}}=\mathrm{K}_{\mathrm{c}}(\mathrm{RT})^{\Delta \mathrm{n}}, \Delta \mathrm{n}=-\mathrm{ve}$

and $\Delta \mathrm{H}=40 \,\mathrm{kcal}$

Reaction is endothermic hence the product will be favoured on increasing temperature and decreasing pressure.

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