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Which one of the following conditions will favour maximum formation of the product in the reaction, A2(g)+B2(g)⇌2X2(g)ΔH=−X kJA_2(g) + B_2(g) \rightleftharpoons 2X_2(g) \Delta H = -X \text{ kJ}?

1

High temperature and high pressure

2

Low temperature and low pressure

3

Low temperature and high pressure

4

High temperature and low pressure

Step-by-Step Solution

For the reaction A2(g)+B2(g)⇌2X2(g);ΔH=−x kJA_2(g) + B_2(g) \rightleftharpoons 2X_2(g); \Delta H = -x \text{ kJ}, increasing pressure shifts equilibrium towards the side with fewer moles of gas (forward direction). Decreasing temperature shifts equilibrium in the exothermic direction (forward direction). Thus, high pressure and low temperature favour maximum formation of the product.

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