The decomposition of azo methane, a...
Question
The decomposition of azo methane, at certain temperature according to the equation (CH_3)_2N_2(g)⟶C_2H_6(g)+N_2(g) is a first order reaction After 40 minutes from th
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The decompogition of azo methane, at certain temperature according to the equation
( left(mathrm{CH}_{3}right)_{2} mathrm{N}_{2}(mathrm{g}) longrightarrow mathrm{C}_{2} mathrm{H}_{6}(mathrm{g})+mathrm{N}_{2}(mathrm{g}) ) is a first order
reaction
After 40 minutes from the start, the total pressure developed is found to be ( 350 mathrm{mm} ) Hg in place of initial pressure ( 200 mathrm{mm} ) Hg of azo methane. The value of rate constant ( k ) is ( :(log 2=0.30) )
( A quad 288 times 10^{-4} mathrm{sec}^{-1} )
B ( 1.25 times 10^{-4} mathrm{sec}^{-1} )
C ( 5.77 times 10^{-4} mathrm{sec}^{-1} )
D ( 4.606 times 10^{-4} mathrm{sec}^{-1} )

JEE/Engineering Exams
Chemistry
Solution
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The decomposition of azo methane, at certain temperature according to the equation (CH_3)_2N_2(g)⟶C_2H_6(g)+N_2(g) is a first order reaction After 40 minutes from the start, the total pressure developed is found to be 350mm Hg in place of initial pressure 200mm Hg of azo methane. The value of rate constant k is  :(log2=0.30)
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[
begin{aligned}
k=2.303 log left[frac{p_{i}}{p_{t}}right]
&=2.303 log left[frac{200}{200-130}right]
x &=5.77 times 10^{-4} mathrm{sec}^{-1}
end{aligned}
]
nence oprion ( (c) ) is correct

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