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Mass action ratio or reaction quotient Q...

Mass action ratio or reaction quotient Q for a reaction can be calculated using the law of mass action `A(g)+B(g) harr C(g) + D(g) Q=([C][D])/([A][B])`. The value of Q decides whether the reaction is at equilibrium or not. At equilibrium, Q = K. For non equilibrium process, `Q ne K`. When `Q gt K`, reaction will favour backward direction and when `Q lt K`, it will favour forward direction.
The reaction quotient Q for : `N_(2(g)) + 3H_(2(g)) harr 2NH_(3(g))` is given by `Q = ([NH_3]^2)/([N_2][H_2]^3)`. lhe reaction will proceed in backward direction, when :

A

`Q = K_c`

B

`Q lt K_c`

C

`QgtK_c`

D

`Q = 0`

Text Solution

Verified by Experts

The correct Answer is:
C
`Q gt K implies` reaction proceeds backward
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