The following data were obtained during the first order thermal decomposition of a gas A at constant volume: A(g) 2B(g) + C(g) S.No Time/s Total pressure/(atm) 1. 0 0.1 2. 115 0.28 The rate constant o

Question

The following data were obtained during the first order thermal decomposition of a gas A at constant volume: A(g) 2B(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______× 10–2s–1 (nearest integer)

Prashant Kotian · Accepted Answer

Correct answer: .. A(g) 2B(g) + C(g) t = 0 0.1 t = 115 sec. 0.1 – x 2x x 0.1 + 2x = 0.28 2x = 0.18 x = 0.09 0.1 K n 0.1 0.09   = 0.0200 sec–1 = 2 × 10–2 sec–1

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