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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
For the reaction 

$CO(g) + H_2O(g)  \rightleftharpoons  CO_2(g) + H_2(g)$, at a given temperature, the equilibrium amount of $CO_2(g)$ can be increased by

  • A
    Adding a suitable catalyst
  • B
    Adding an inert gas
  • C
    Decreasing the volume of container
  • ✓
    Increasing the amount of $CO(g)$
✓

Answer

Correct option: D.
Increasing the amount of $CO(g)$
d
$CO ( g )+ H _2 O ( g ) \rightleftharpoons CO _2( g )+ H _2( g )$

At constant volume, there is no effect of addition of inert gas to a reaction in equilibrium.

At constant pressure, for the reactions for which $\Delta n =0$, there is no effect of addition of inert gas to a reaction in equilibrium.

The presence of a catalyst just helps to achieve the equilibrium at a different pace. It does not affect the amount of a reactant or a product at equilibrium.

Only if the reactant concentration is increased, the equilibrium shifts forward and the product concentration is increased.

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