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Surface-catalysed reactions – order
Concepts tested here
- phosphine-tungsten-first-order
All Questions
2016 Phase II 1 question
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The decomposition of phosphine ($PH_3$) on tungsten at low pressure is a first-order reaction. It is because the
At low pressure coverage ∝ pressure, so rate is first order.
The decomposition of $PH_3$ on tungsten at low pressure is first order because the rate is proportional to the surface coverage.