Question

(a) State Lechatelier's principle.

(b) Explain what effect shall be observed in the following reaction and
why?
N2(g) + 3H2(g) = 2NH3;4
2NH2; ArHº = -92.3 kJ mol-1
(it) if pressure is increased
(ii) if temperature is decreased.
(C)
At equilibrium the concentration of N, is 3.0x10-3M, O, is
4.2x10-²M and NO is 2.8 x10-3M in a sealed vessel at 800 k. What
5
will be the value of Kc for the reaction -
+ O2(g)
N2(8)
= 2N0(g)​

Answer 1

Lechatelier effect :

Due to common ion effect at equilibrium reaction when they feel extra concentration at that time equilibrium shift backward ..

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