The following data were obtained during the first order thermal decomposition of a gas $A$ at constant volume:
$A\left(g\right) \to 2B\left(g\right) + C\left(g\right)$
S. No Time/s Total pressure/(atm)
$1 .$ $0$ $0 . 1$
$2 .$ $115$ $0 . 28$
The rate constant of the reaction is _______ $\times {10}^{- 2}{s}^{- 1}$ (nearest integer)

Question

The following data were obtained during the first order thermal decomposition of a gas

A

at constant volume:

$A\left(g\right) \to 2B\left(g\right) + C\left(g\right)$

S. No Time/s Total pressure/(atm)

$1 .$ $0$ $0 . 1$

$2 .$ $115$ $0 . 28$

The rate constant of the reaction is _______ $\times {10}^{- 2}{s}^{- 1}$ (nearest integer)

Quantrex Academy · Accepted Answer

Correct answer: 0

array ll t = 0 t = 115sec . array array ll A(g) 0 . 1 0 . 1 - x array array ll → array array ll 2B(g) 2x array array ll + array array ll C(g) 2x array 0 . 1 + 2x = 0 . 28 2x = 0 . 18 x = 0 . 09 K = (1)/(115)ln(0 . 1)/(0 . 1 - 0 . 09) = 0 . 0200 ^ - 1 = 2 × 10 ^ - 2 ^ - 1

The following data were obtained during the first order thermal...

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