Q

# Solve it, - Equilibrium - NEET-2

Which one of the following conditions will favour maximum formation of the product in the reaction,

$A_{2}(g) + B_{2}(g) \rightleftharpoons X_{2}(g) \Delta _{r}H = -X kJ$ ?

• Option 1)

High temperature and high pressure

• Option 2)

Low temperature and low pressure

• Option 3)

Low temperature and high pressure

• Option 4)

High temperature and low pressure

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As we learnt that

Effect of Pressure change -

A pressure change obtained by changing the volume can affect the yield of product in case of a gaseous reaction where the total number of moles of gaseous reactant and total number of moles of gaseous product are different.

-

Effect of temperature change -

When a change in temperature occur, the value of equilibrium constant Kc is changed.

-

For reaction $\Delta H = -ve \; and \; \Delta n_{g} = -ve$

$\therefore$ High pressure and low temperature favour product formation .

Option 1)

High temperature and high pressure

This is incorrect.

Option 2)

Low temperature and low pressure

This is incorrect.

Option 3)

Low temperature and high pressure

This is correct.

Option 4)

High temperature and low pressure

This is incorrect.

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