For the given reaction, if the initial pressure is 450 mmHg and the pressure at time is 720 mmHg at a constant temperature and constant volume . The fraction of decomposed under these conditions is

Question

For the given reaction, if the initial pressure is 450 mmHg and the pressure at time  is 720 mmHg at a constant temperature  and constant volume . The fraction of  decomposed under these conditions is . The value of  is (nearest integer).

Canvas Classes · Accepted Answer

Strategy:
 Use the relationship between total pressure and the extent of reaction () in a constant volume system. Set up an ICE table in terms of partial pressures.

Step 1: ICE Table
Reaction: 
Initial Pressure (): 
Change: 
Pressure at time  ():

Step 2: Solve for dissociation 
.

Step 3: Calculate fraction decomposed ()
.
In  form: .

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