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If helium gas is added at constant press...

If helium gas is added at constant pressure to the following reaction at equilibrium`CO(g) + 3H_2(g) hArr CH_4(g) + H_2O(g)`, then

A

Formation of methane will increase

B

Equilibrium shifts in backward direction

C

No effect on equilibrium

D

Activation energy of the reaction will decrease

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