A second order reaction is 50 % complete in 19 minutes. How long will it take...
A first-order reaction is 24.0% complete in 19.7 minutes. How long will the reaction take to be 85.5% complete? Calculate the rate constant for the reaction.
D Question 7 2 pts How long (in hours) does it take for a first order reaction to go from 0.050 M to 0.010 M? Answer to three decimal places. k=2.42 (1/hr) Question 8 2 pts A second order reaction at 443°C has a k-30. with the units appropriate for a second order reaction. How much time (in minutes) does it take for the concentration of the reactant to drop from 0.010M to 0.0050 M? Answer to 1 decimal place.
Question 3 1 pts The rate constant, k, of the first order reaction A B +C is k = 8.62 x 10-35-1. If the initial concentration of A is 2.74 M, how long will it take for the concentration of A to fall below 0.32 M? Give your answer to one decimal place in MINUTES (do not input the units). For example, if your answer is 8.956 minutes, enter 9.0 Question 4 1 pts The rate constant, k, of the...
5. A first order reaction is 66% complete in 400 s. How long will it take for 95% completion?
a certain second order reaction A to B is 25% complete in 42 minutes at 25 degrees celsius. What is the half life of the reaction
26. For the following second order reaction, how long will it take for a 80% solution of A to decompose to a 20% solution if the rte constant is 0.248 Lmol*s at 25°C? 3A2D a. -15 seconds b. .93 seconds c. 15 seconds d. -93 seconds 27. For the following first order reaction, what is the half life if the rate constant is 2.49 s and the original concentration of A is 2.56 M? a. 0.278 seconds b. 3.59 seconds...
A first order reaction has a half-life of 196 seconds at 25oC. How long (in minutes) does it take for the concentration of the reactant to drop to 3.125% of the original concentration? (it's not 16.34) The rate constant of a chemical reaction increased from 0.197 s-1 to 3.24 s-1 after raising the temperature from 20.0 oC to 60.0 oC. What is the activation energy (in kJ/mol) for this reaction? (Hint: Think about what R value to use and what...
52. A first-order reaction is 75.0% complete in 320, s. What are the first and second half-lives for this reaction? a. b. How long does it take for 90.0% completion?
The rate constant for the second order reaction is 0.200 How long in seconds would it take for the concentration of A to decrease from 0.830 M to 0.240 M
A reaction that is second order in one reactant has a rate coefficient of 0.05 dmmols1. If the initial concentration of the reactant in 0.1 mol dm, how long will it take (in seconds) for the concentration to become 0.05 mol dm 3? Express your answer in seconds, correct to two decimal places. Please do not include the correct units (seconds) in your answer.