The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the:
rate is independent of the surface coverage
rate of decomposition is very slow
rate is inversely proportional to the surface coverage
rate is proportional to the surface coverage
A
rate is independent of the surface coverage
B
rate is proportional to the surface coverage
C
rate of decomposition is very slow
D
rate is inversely proportional to the surface coverage
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Solution
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The decomposition of PH3 on tungsten at low pressure is a first order reaction because surface area coverage is proportional to
partial pressure of PH3. Hence, rate is proportional to the surface coverage.
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