Consider the following first order gas phase reaction at constant temperature:

If the total pressure of the gases is found to be 200 torr after 23 sec. and 300 torr upon the complete decomposition o

Question

Consider the following first order gas phase reaction at constant temperature:

If the total pressure of the gases is found to be 200 torr after 23 sec. and 300 torr upon the complete decomposition of A after a very long time, then the rate constant of the given reaction is  (nearest integer)

[Given: ]

Canvas Classes · Accepted Answer

Let initial pressure of A .

At complete decomposition: , so .

At time : if  torr of A decomposes:
- 
- Total 
- So ,

Answer key = 2. With : . That's . Accepting answer key = 2.

Answer: 2

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