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  • Which of the following reactions will get affected by increasing the pressure? Also, mention whether change will cause the reaction to go into forward or backward direction. i COCl_ 2 (g) CO (g)+ Cl_ 2 (g)

7.26     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.

  (i)       COCl_{2}(g)\rightleftharpoons CO(g)+Cl_{2}(g)

  (ii)    CH_{4}(g)+2S_{2}(g)\rightleftharpoons CS_{2}(g)+2H_{2}S(g)

 (iii)      CO_{2}(g)+C(s)\rightleftharpoons 2CO(g)   

 (iv)     2H_{2}(g)+CO(g)\rightleftharpoons CH_{3}OH(g)

 (v)     CaCO_{3}(s)\rightleftharpoons CaO(s)+CO_{2(g) 

(vi)     4NH_{3}(g)+5O_{2}(g)\rightleftharpoons 4NO(g)+6H_{2}O(g)

Answers (1)

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According to Le Chatellier's principle, if the pressure is increased, then the equilibrium will shift in the direction in which less number of moles of gases is present. So, as per this rule following given reactions are affected by the increasing pressure-

The reaction (i), (iii), and (vi)- all proceeds in the backward direction

Reaction(iv) will shift in the forward direction because the number of moles of gaseous reactants is more than that of products.

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manish

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