In a reaction involving the synthesis of ammonia by Haber's process, N2+3H2⇌2NH3 The rate of reaction was measured as Rate=2.5×10−4molL−1S−1. The rate of change of conc. of H2 will be :
A
1.25×10−4molL−1S−1
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B
2.50×10−4molL−1S−1
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C
7.5×10−4molL−1S−1
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D
5.0×10−4molL−1S−1
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Solution
The correct option is C7.5×10−4molL−1S−1 As given, r=−13d[H2]dt −d[H2]dt=3×2.5×10−4=7.5×10−4molL−1S−1