Equilibrium Question 580

Question: For the reaction 2NO2(g)2NO(g)+O2(g) , Kc=1.8×106 at 185°C. At 185°C the Kc for NO(g) + 12O2(g)NO2(g) is [JIPMER 2001]

Options:

A) 1.95×103

B) 1.95×103

C) 7.5×102

D) 0.9×106

Show Answer

Answer:

Correct Answer: C

Solution:

Kc1=[NO]2[O2][NO2]2=1.8×106

Þ Kc2=[NO2][NO][O2]1/2;

Kc1=1Kc22 ; 1.8×106=1Kc22

Þ Kc2=7.5×102



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