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Question

Kc for the reaction 12N2(g)+12O2(g)+12Br2(g)NOBr(g) the following information at 298 K
2NO(g)N2(g)+O2(g) K1=2.4×1030
NO(g)+12Br2(g)NOBr(g) K2=1.4
(Given : 12.4=0.645)

A
3.15×109
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B
6.35×1018
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C
9.0×1016
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D
17×1017
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Solution

The correct option is C 9.0×1016
12N2(g)+12O2(g)NO(g)
Kc=(12.4×1030)12
NO(g)+12Br2(g)NOBr(g)
K2=1.4
12N2(g)+12O2(g)+12Br(g)NOBr(g)
K=Kc×K2=0.645×1.4×1015=0.903×10159.0×1016

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