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1

Chemistry Jan 14, 2021

1. Using the given data, calculate the rate constant of this reaction.

A+B---------> C+D

Trial [A](M) [B](M) Rate (M/s)
1 .390 .390 .0127
2 .390 1.01 .0926
3 .624 .390 .0219

K= Units= (M. s-1 M-2,s-1 s-1 M-1,s-1)

THE ANSWER IS NOT : 0.0900 M. s-1

2. The rate constant for this first-order reaction is 0.340 s–1 at 400 °C.

A------> Products

How long (in seconds) would it take for the concentration of A to decrease from 0.850 M to 0.260 M?

Answer is not: 7.85 sec

Expert Solution

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