Q.

Consider the reaction,
 CO(g)+3H2(g) CH4(g)+H2O(g)
4 moles of gaseous reactants, taken in a ratio to get maximum yield, are allowed to reach equilibrium (state I) in a cylinder fitted with a piston at constant temperature. It is compressed to reduce the volume to one half of the volume in state-I. Then new equilibrium (state-II) is reached. Then

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a

Partial pressure of methane and water increases whereas partial pressures of carbon monoxide and hydrogen decreases from state-I to state-II

b

All are correct

c

State-II can be arrived at different pressures

d

Transformation from State-I to state-II, generates entropy

answer is C.

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Detailed Solution

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State-I to state- II is spontaneous, NCERT XI, Equilibrium

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Consider the reaction, CO(g)+3H2(g)⇌ CH4(g)+H2O(g)4 moles of gaseous reactants, taken in a ratio to get maximum yield, are allowed to reach equilibrium (state I) in a cylinder fitted with a piston at constant temperature. It is compressed to reduce the volume to one half of the volume in state-I. Then new equilibrium (state-II) is reached. Then