For the given three step endothermic reaction, which of the following statement(s) is/are correct?
$A_{2 (g)} + B_{2 (g)} S t e p 1 ⇌ 4 C_{(g)} S t e p 2 ⇌ 3 D_{(g)} S t e p 3 ⇌ 2 E_{(g)}$

Step 1 is favoured by high temperature and low pressure

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Step 2 is favoured by low temperature and high pressure

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Step 2 is favoured by high pressure and high temperature

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Step 3 is favoured by high pressure and high temperature

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Solution

The correct options are
B Step 1 is favoured by high temperature and low pressure
C Step 2 is favoured by high pressure and high temperature
D Step 3 is favoured by high pressure and high temperature
According to Le Chatelier's principle, endothermic reactions are favoured at high temperature, while exothermic reactions are more favoured at lower temperatures.
If $Δ n_{g} > 0$ , then the reaction is favourable at low pressure and if $Δ n_{g} < 0$ , then the reaction is favourable at high pressure.

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