Question
For the decomposition of azomethane, CH _3 ~N _2 CH _3( ~g ) CH _3 CH _3( ~g )+ N _2( ~g ) a first order reaction, the variation in partial pressure with time at 600 ~K is given as The half life of the reaction is .
BITSAT
Chemistry
Chemical Kinetics
2023
BITSAT 2023 (Memory Based Paper 2)
BITSAT Chemistry Question (2023) — Solution
Options
- A. 2 10^ -5 s
- B. 2 10^ -4 ~s
- C. 4 10^ -4 s
- D. 2 10^ -3 ~s
Answer
A. 2 10^ -5 s
Step-by-step solution
For first order reaction aligned & k= 1 t ( P_0 P ) In ( P_0 P )=k t \\ & ( P P_0 )=-k t aligned On comaring with straight line equation y = mx aligned & k = slope =3.465 10^4 \\ & t _ 1 / 2 = 2 k = 0.693 3.465 10^4 =2 10^ -5 ~s aligned
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