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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}


Answers (1)



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


Option 2)

\Theta =K_{c}


Option 3)

\Theta < K_{c}


Option 4)

\Theta >K_{c}


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