JEE Main Chemistry question
The following data were obtained for the first order decomposition of at a constant volume and at a particular temperature.
| S.N. | Time | Total pressure (Pa) | |---|---|---| | 1 | At the end of 10 min | 300 | | 2 | After completion | 200 |
The rate constant is [K CET 2011]
Answer: (A)
Solution
Let the initial pressure of be . Since is a solid, only and contribute to the total gas pressure. After complete reaction, and (from ) , so total final pressure Pa. After 10 min, if is
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