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Question

At 1400K,Kc=2.5×103 for reaction CH4(g)+2H2S(g)CS2(g)+4H2(g). At 10.0L reaction vessel at 1400K contains 2.00 mole of CH4, 3.0 mol of CS2, 3.0 mole of H2 and 4.0 mole of H2S. Then ________.

A
this reaction is at equilibrium with above concentrations.
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B
the reaction will proceed in forward direction to reach equilibrium.
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C
the reaction will proceed in backward direction to each equilibrium.
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D
the information is insufficient to decide the direction of progress of reaction.
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Solution

The correct option is A the reaction will proceed in backward direction to each equilibrium.
Qc=((310)4(310)(210)(410)2=24332×102=7.59×102>Kc
So, reaction will proceed in backward direction.

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