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The reaction quotient ($\Theta$ ) for the reaction is given by:

N2(g) + 3 H2(g)$\leftrightarrow$ 2NH3$\Theta = \frac{[NH_{3}]^{2}}{[N_{2}][H_{2}]^{3}}$

The reaction will proceed from right to left if:

• Option 1)

$\Theta =0$

• Option 2)

$\Theta =K_{c}$

• Option 3)

$\Theta < K_{c}$

• Option 4)

$\Theta >K_{c}$

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Direction of reaction -

Direction of reaction is predicted with the help of reaction quotient Q.

- wherein

The reaction quotient Q is defined in the same way as equilibrium constant Kc except that concentration are not necessarily equilibrium values.

If Qc > Kc -

The reaction will proceed in the direction of reactants ( Reverse direction )

-

Reaction will Proceed from right to left.

If $Q_c> K_c$

$\Rightarrow\Theta > K_c$

Option 1)

$\Theta =0$

Incorrect

Option 2)

$\Theta =K_{c}$

Incorrect

Option 3)

$\Theta < K_{c}$

Incorrect

Option 4)

$\Theta >K_{c}$

Correct

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