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Equilibrium

Question
CBSEENCH11006402

Which of the following reactions will get affected by increasing the pressure? Also, mention whether the change will cause the reaction to go into forward or backward direction?

left parenthesis straight i right parenthesis space COCl subscript 2 left parenthesis straight g right parenthesis space space rightwards harpoon over leftwards harpoon space space space space CO left parenthesis straight g right parenthesis space plus space Cl subscript 2 left parenthesis straight g right parenthesis
left parenthesis ii right parenthesis space CH subscript 4 left parenthesis straight g right parenthesis space plus space 2 straight S subscript 2 left parenthesis straight g right parenthesis space space space rightwards harpoon over leftwards harpoon space space space space CS subscript 2 left parenthesis straight g right parenthesis plus space 2 straight H subscript 2 straight S left parenthesis straight g right parenthesis
left parenthesis iii right parenthesis space CO subscript 2 left parenthesis straight g right parenthesis space plus space straight C left parenthesis straight s right parenthesis space space rightwards harpoon over leftwards harpoon space space 2 CO left parenthesis straight g right parenthesis
left parenthesis iv right parenthesis space 2 straight H subscript 2 left parenthesis straight g right parenthesis space plus space CO left parenthesis straight g right parenthesis space space rightwards harpoon over leftwards harpoon space space CH subscript 3 OH left parenthesis straight g right parenthesis
left parenthesis straight v right parenthesis space CaCO subscript 3 left parenthesis straight s right parenthesis space rightwards harpoon over leftwards harpoon space space space CaO left parenthesis straight s right parenthesis plus space CO subscript 2 left parenthesis straight g right parenthesis
left parenthesis vi right parenthesis space 4 NH subscript 3 left parenthesis straight g right parenthesis space plus space 5 straight O subscript 2 left parenthesis straight g right parenthesis space rightwards harpoon over leftwards harpoon space space 4 NO left parenthesis straight g right parenthesis space plus space 6 straight H subscript 2 straight O left parenthesis straight g right parenthesis


Solution

(i) In this case np (=2) is greater than n(=1), the reaction will go in the backward direction.
(ii) In this case np ( = 3) is equal to nr ( = 3), reaction will not be affected by the pressure.
(iii) In this case np (= 2) is greater than n(=1), the reaction will go in the backward direction.
(iv) In this case np (=1) is less than nr (= 3), the reaction will go in a forward direction.
(v) In this case np (=1) is greater than nr (= 0) reaction will go in the backward direction.
(vi) In this case np (= 10) is greater than nr (= 9), the reaction will go in the backward direction.