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← JEE Main 2022 · 25 Jul · Shift 2
ChemistryInteger+4 / -1Question 85 of 90

JEE Main 2022 · 25 Jul · Shift 2, Chemistry question 85

For the decomposition of azomethane, CH3N2CH3(g)→CH3CH3(g)+N2(g)\mathrm{CH_3N_2CH_3(g)\rightarrow CH_3CH_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 ______ ×10−5\times10^{-5} s. [Nearest integer]

ln(p/p0) against t/s: a falling straight line with slope −3.465 × 10⁴.
Answer and worked solution

Official answer: 2

k =3.465×104=3.465\times10^4 s−1^{-1}: t1/2=0.693k=2×10−5t_{1/2}=\frac{0.693}k=2\times10^{-5} s.

Answer: 2

Topics:Integrated rate equationsHalf-life
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