# Problem: The rate constant for a first-order reaction is 6.47 x 10 -7 hr -1. How long would it take for the reaction to be 28.75% complete? A. 2.28 x 105 hours B. 8.37 x 105 hours C. 6.09 x 105 hours D. 5.24 x 105 hours E. 1.93 x 105 hours

###### Problem Details

The rate constant for a first-order reaction is 6.47 x 10 -7 hr -1. How long would it take for the reaction to be 28.75% complete?

A. 2.28 x 105 hours
B. 8.37 x 105 hours
C. 6.09 x 105 hours
D. 5.24 x 105 hours
E. 1.93 x 105 hours

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Integrated Rate Law concept. You can view video lessons to learn Integrated Rate Law. Or if you need more Integrated Rate Law practice, you can also practice Integrated Rate Law practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofThe rate constant for a first-order reaction is 6.47 x 10 -7...as medium difficulty.

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What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Wasserman's class at PURDUE.