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Question

Predict the effect upon the following reaction equilibria of increased pressure.
(1) H2O(g)H2(g)+12O2(g)(2) CaCO3(s)CaO(s)+CO2(g)(3) C(s)+H2O(g)H2(g)+CO(g)

A
Left, Left, Left
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B
Right, Right, Right
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C
Left, Right, Left
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D
Right, Left, Right
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Solution

The correct option is A Left, Left, Left
On increasing pressure, the concentration of species will increase.
Then the equilibrium will shift towards the direction where the concentration or number of moles will be less.
In all the reaction the number of moles of species is less in reactant side. So, the equilibrium will shift towards left.

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