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JEE Main20241 Feb 2024Evening ShiftChemistryChemical KineticsActual

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

Correct answer

0

Step-by-step solution

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

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