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Which of the following reactions will ge...

Which of the following reactions will get affected by increasing the pressure? Also, mention whether change will cause the reaction the reaction to go into forward of backward direction.
a. `COCl_(2)(g) hArr CO(g)+Cl_(2)(g)`
b. `CH_(4)(g)+2S_(2)(g) hArr CS_(2)(g)+2H_(2)S(g)`
c. `CO_(2)(g)+C(s) hArr 2CO(g)`
d. `2H_(2)(g)+CO(g) hArr CH_(3)OH(g)`
e. `CaCO_(3)(s) hArr CaO(s)+CO_(2)(g)`
f. `4NH_(3)(g)+5O_(2)(g) hArr 4NO(g)+6H_(2)O(g)`

Text Solution

Verified by Experts

Reactions affected will be those in which `(n_(p) != n_(r))_(gaseous)` .Hence, reactions (i) and (iii) will be affected. By applying Le Chatelier’s principle, we can predict the direction. Increase of pressure will shift the equilibrium to the side in which the number of moles is less.
(i) `n_(p) = 2, n_(r) = 1, i.e., n_(p)>n_(r)` reaction will go in the backward direction (ii) `n_(p) = 3, n_(r) = 3, i.e., n_(p)=n_(r)` reaction will not be affected by pressure
(iii) `n_(p) = 1, n_(r) = 3, i.e., n_(p)
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