NCERT Class XI Chemistry Equilibrium Solutions
© examsnet.com
Question : 30
Total: 73
At 473 K, equilibrium constant K c P C l 5 10 – 3
P C l 5 ( g ) P C l 3 ( g ) + C l 2 ( g ) Δ r H ° k J mol – 1
(a) Write an expression for Kc for the reaction.
(b) What is the value of Kc for the reverse reaction at the same temperature?
(c) What would be the effect onK c
(i) moreP C l 5
(ii) pressure is increased
(iii) the temperature is increased?
(a) Write an expression for Kc for the reaction.
(b) What is the value of Kc for the reverse reaction at the same temperature?
(c) What would be the effect on
(i) more
(ii) pressure is increased
(iii) the temperature is increased?
Solution:
(a) K c
(b)P C l 3 ( g ) + C l 2 ( g ) P C l 5 ( g )
∴K c ′
(c)P C l 5 ( g ) P C l 3 ( g ) + C l 2 ( g )
(i) If moreP C l 5 Q c
(ii) If the pressure is increased, the reaction will shift towards backward direction as it contains less number of gaseous species.
(iii) As the reaction is endothermic, the increase in temperature will favour the forward reaction. MoreP C l 5 P C l 3 C l 2
(b)
∴
(c)
(i) If more
(ii) If the pressure is increased, the reaction will shift towards backward direction as it contains less number of gaseous species.
(iii) As the reaction is endothermic, the increase in temperature will favour the forward reaction. More
© examsnet.com
Go to Question: