The following data were obtained during the first order thermal decomposition of a gas $A$ at constant volume:
$A (g) \to 2 B (g) + C (g)$
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 (g) \to 2 B (g) + C (g)

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)

Accepted Answer

Correct answer: 2. (2) A (g ) 2B (g )+C (g ) t=00.1t=115 sec .0.1-x2x x0.1+2x=0.282x=0.18x=0.09 K= 1115 ln ⁡ 0.1 m0.1-0.09=0.0200 sec^-1=2 10^-2 sec^-1

$The following data were obtained during the first order thermal decomposition of a gas A at constant volume: A (g) \to 2 B (g) + C (g) S. No Time/s Total pressure/(atm) 1. 0 0.1 2. 115 0.28 The rate constant of the reaction is____\times 10^{- 2} s^{- 1} (nearest integer)$

Solution

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