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State five conditions by which the point...

State five conditions by which the point of equilibrium of the following reversible reaction can be shifted towards left.
`N_2+3H_2iff2NH_3+Qcal.`

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`N_2+3H_2iff2NH_3+Qcal`.
The five condition by which the point of equilibrium of the above reversible reaction is shifted towards left are as follows
(a) Decreasing the concentration of nitrogen.
(b) Decreasing the concentration of hydrogen.
(c) Increasing the concentration of ammonia.
(d) Increasing the temperature.
(e) Decreasing the pressure.
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