HalfLifeCalcs1

# HalfLifeCalcs1 - 3.7 x 10-5 s-1 at 298 K a What is the...

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Half-Life Calculations – 1 An AP Chemistry In-Class Activity 1. The rate constant for a certain first-order reaction is 0.030 min -1 . a. What is he half-life of this reaction? 23 min b. How long will it take for the concentration to drop from 0.40 M to 0.20 M? c. From 0.20 M to 0.05M? 2. Dinitrogen pentoxide, N 2 O 5 , decomposes by first-order process with a rate constant of
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Unformatted text preview: 3.7 x 10-5 s-1 at 298 K. a. What is the half-life in hours for the decomposition of N 2 O 5 at 298 K? 5.2 hr b. If the concentration of N 2 O 5 starts at 2.33 x 10-2 M, what will be its concentration after 2.0 hours? 1.78 x 10-2 c. How many minutes will it take for the concentration of N 2 O 5 to decrease from 0.0233 M to 0.0176 M? 126 mins...
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