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Grade: 12th pass
        
Half life time of the following first order reaction is 20 min A→B+C .If initial pressure of A is 1 atm then total pressure after 80 min is
 
8 months ago

Answers : (2)

Shivansh
askIITians Faculty
267 Points
							After 80min, 4 half-livespass
The remaining pressure would be 1/16 of initial for A
hence total pressure will be -

1/16 + 15/16 + 15/16 = 1.93atm
8 months ago
Vikas TU
8726 Points
							
Given reaction is:
A->B+C
        P=1
After 20min
         P=0.5
Therefore
p-x       x         x
total pressure is p+x
80min is 4 half life times so the pressure of A is 1/16
Therefore 1-x=1/16
So x=15/16
Total pressure is 1+15/16=31/16.
8 months ago
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