For the reversible reaction, N _2(g) + 3 H _2(g) 2 NH _3(g) + Heat The equilibrium shifts in forward direction

NEET 2014 Chemistry question

For the reversible reaction, The equilibrium shifts in forward direction

(1)By increasing the concentration of (g)
(2)By decreasing the pressure
(3)By decreasing the concentrations of (g) and (g)
(4)By increasing pressure and decreasing temperatureCorrect

Answer: (4)

Solution

Apply Le Chatelier's principle. The forward reaction is exothermic and decreases the number of gas moles (4 mol 2 mol). (1) Adding product shifts the equilibrium backward. (2) Decreasing pressure favours the side with more moles

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Question ID VK-091532