The yield of product in the reaction,
$A_{2} (g) + 2 B (g) ⇌ C (g) + Q k J$
would be higher at:

Low temperature and high pressure

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High temperature and high pressure

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Low temperature and low pressure

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High temperature and low pressure

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Solution

The correct option is A Low temperature and high pressure
As heat is released in the given reaction, the reaction is exothermic. In case of exothermic reaction, low temperature favours product formation.
According to Le chatlier's principle, pressure increase shifts an equilibrium to the side of the reaction with the fewer number of moles of gas. Hence, high pressure will favour product formation.

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