Consider a chemical reaction involving compounds A and B, which is found to be first order in A and second order in B. At what rate will the reaction occur in experiment 2 ? Experiment Rate (Ms-1) Initial [A] Initial [B] 1 0.10 1.0 M 0.20 M 2 ? 2.0 M 0.60 M

Question

Consider a chemical reaction involving compounds A and B, which is found to be first order in A and second order in B. At what rate will the reaction occur in experiment 2 ? Experiment Rate (Ms-1) Initial [A] Initial [B] 1 0.10 1.0 M 0.20 M 2 ? 2.0 M 0.60 M (A) 1.8 M s -1 (B) 0.20 M s -1 (C) 1.2 M s -1 (D) 0.36 M s -1

Tardigrade Admin · Accepted Answer

From first experiment 0.1= K [1][0.2]2 K =2.5 r =2.5[2][0.6]2 In exp. II =1.8 M s -1

Q. Consider a chemical reaction involving compounds A and B, which is found to be first order in A and second order in B. At what rate will the reaction occur in experiment 2 ?

Experiment Rate $(M s^{- 1})$ Initial [A] Initial [B]

1 0.10 1.0 M 0.20 M

2 ? 2.0 M 0.60 M

$1.8 M s^{- 1}$

$0.20 M s^{- 1}$

$1.2 M s^{- 1}$

$0.36 M s^{- 1}$

From first experiment
$0.1 = K [1] [0.2]^{2}$
$K = 2.5$
$r = 2.5 [2] [0.6]^{2}$ In exp. II
$= 1.8 M s^{- 1}$

Q. Consider a chemical reaction involving compounds A and B, which is found to be first order in A and second order in B. At what rate will the reaction occur in experiment 2 ? Experiment Rate (Ms−1) Initial [A] Initial [B] 1 0.10 1.0 M 0.20 M 2 ? 2.0 M 0.60 M

1.8Ms−1

0.20Ms−1

1.2Ms−1

0.36Ms−1