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The decomposition of dinitrogen pentoxid...

The decomposition of dinitrogen pentoxide `(N_(2)O_(5))` follows first order rate law. Calculate the rate constant from the given data:
`t=800sec[N_(2)O_(5)]=1.45 "mol"L^(-1)=[A_()]`
`t=600 sec [N_(2)O_(5)]=0.88"mol"L^(-1)=[A_(2)]`

A

`3.12 xx 10^(-4) s^(-1)`

B

`6.24 xx 10^(-4) s^(-1)`

C

`2.84 xx 10^(-4) s^(-1)`

D

`8.14 xx 10^(-4) s^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
`k = (2.303)/((t_(2) - t_(1))) "log" (1.45)/(0.88) = (2.303)/(800) xx 0.2169`
`= 6.24 xx 10^(-4) s^(-1)`
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