For a chemical reaction A + B → Products, the order is one with respect to each A and B. The sum of x and y from the following data is
Rate (mol l^-1 s^-1): 0.10, 0.40, 0.80
[A] (mol l^-1): 0.20

Question

For a chemical reaction A + B → Products, the order is one with respect to each A and B. The sum of x and y from the following data is
Rate (mol l^-1 s^-1): 0.10, 0.40, 0.80
[A] (mol l^-1): 0.20, x, 0.40
[B] (mol l^-1): 0.05, 0.05, y

Prashant Kotian · Accepted Answer

Correct answer: 1. Rate = k[A][B]. From exp 1: 0.10 = k(0.20)(0.05) => k = 10. From exp 2: 0.40 = 10(x)(0.05) => 0.5x = 0.40 => x = 0.80. From exp 3: 0.80 = 10(0.40)(y) => 4.0y = 0.80 => y = 0.20. The sum x + y = 0.80 + 0.20 = 1.0. Therefore, correct answer is 1.

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