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12 Dec 2019

Part A) The rate constant for a certain reaction is k = 2.00×10−3 s−1 . If the initial reactant concentration was 0.350 M, what will the concentration be after 12.0 minutes?

Part B) A zero-order reaction has a constant rate of 4.40×10−4M/s. If after 50.0 seconds the concentration has dropped to 6.50×10−2M, what was the initial concentration?

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Keith Leannon
Keith LeannonLv2
13 Dec 2019

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Related questions

a) The rate constant for a certain reaction is k = 8.20×10−3 s−1 . If the initial reactant concentration was 0.750 M, what will the concentration be after 10.0 minutes?

b) A zero-order reaction has a constant rate of 1.80×10−4M/s. If after 30.0 seconds the concentration has dropped to 9.00×10−2M, what was the initial concentration?

(Please explain how to do a problem like this, not just the answer. I appreciate any help. Thank you!)

1)The rate constant for a certain reaction is k = 6.90×10−3 s−1 . If the initial reactant concentration was 0.950 M, what will the concentration be after 14.0 minutes?

2)A zero-order reaction has a constant rate of 3.00×10−4 M/s. If after 65.0 seconds the concentration has dropped to 8.00×10−2 M, what was the initial concentration?

The reactant concentration in a zero-order reaction was 6.00×10−2 M after 125 s and 2.00×10−2 M after 320 s . What is the rate constant for this reaction? My Correct answer was:

k 0th =

2.05×10−4 M s

The next question asks: What was the initial reactant concentration for the reaction described in Part A?

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