Textbook Question
Suppose that for the reaction K+L⟶M, you monitor the production of M over time, and then plot the following graph from your data: b. Is the reaction completed at 𝑡=15 min?
15. Chemical Kinetics
Intro to Chemical Kinetics
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Given the concentration of H₂O changes from 0.50 M to 0.30 M between 25 s and 65 s, calculate the average rate of the reaction in M/s.
A
0.006 M/s
B
0.005 M/s
C
0.004 M/s
D
0.007 M/s
Verified step by step guidance1
Identify the initial and final concentrations of H₂O. The initial concentration is 0.50 M and the final concentration is 0.30 M.
Determine the time interval over which the concentration change occurs. The time interval is from 25 s to 65 s, which is 65 s - 25 s = 40 s.
Calculate the change in concentration of H₂O. This is done by subtracting the final concentration from the initial concentration: Δ[H₂O] = 0.30 M - 0.50 M.
Use the formula for average rate of reaction: \( \text{Average Rate} = \frac{\Delta [\text{H}_2\text{O}]}{\Delta t} \), where \( \Delta [\text{H}_2\text{O}] \) is the change in concentration and \( \Delta t \) is the change in time.
Substitute the values into the formula: \( \text{Average Rate} = \frac{-0.20 \text{ M}}{40 \text{ s}} \). Calculate the average rate of the reaction in M/s.
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