Consider the following single step reaction in gas phase at constant temperature. 2A(g) + B(g) → C(g) The initial rate of the reaction is recorded as r1 when the reaction starts with 1.5 atm pressure

Question

Consider the following single step reaction in gas phase at constant temperature. 2A(g) + B(g) → C(g) The initial rate of the reaction is recorded as r1 when the reaction starts with 1.5 atm pressure of A and 0.7 atm pressure of B. After some time, the rate r2 is recorded when the pressure of C becomes 0.5 atm. The ratio r1 : r2 is ________ × 10 –1. (Nearest integer)

Prashant Kotian · Accepted Answer

Correct answer: .. 2A(g) + B(g) → C(g) r1 1.5 atm 0.7 atm r2 0.5 atm 0.2 atm 0.5 atm  r = K [PA] 2[PB] r1 = K [1.5] 2[0.7] r2 = K [0.5] 2[0.2] –1 2 r 9 31.5 315 10 r = × = = × Ans. 315 $//(1® Final JEE-Main Exam April, 2024/05-04-2024/Evening Session

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