For the elementary reaction, at 250C , H2(g)+I2(g)⇌2HI(g) rate is given by : Rate = 1.6×10−18 [H2][I2] . For the reaction , 2HI(g)⇌H2(g)+I2(g) , the rate is given by rate = 2.4×10−23[HI]2 at 250C . What is the KC value for the reaction, H2(g)+I2(g)⇌2HI(g) at 250C

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3×1.6×10−18

6.6×104

6.25×1017

4.2×1022

answer is B.

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Detailed Solution

Kc=Kf/Kb=1.6×10−182.4×10−23=1.62.4×105 =6.6×104

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