4. The rate constant for the reaction 3AAR is 250 x 10 molminHow long will it...
6. Consider the reaction 3A C. If the reaction is second order with a half-life of 20.0) hrs. Starting the reaction with an initial concentration of A as 0.75M, calculate the time required for the concentration to decrease to 0.25M (8 points)
6. Consider the reaction 3A - C. If the reaction is second order with a half-life of 20.00 hrs. Starting the reaction with an initial concentration of A as 0.75M, calculate the time required for the concentration to decrease to 0.25M (8 points)
4. The rate constant for the reaction rate constant for the reaction 3A 4B is 2.50 x 10-3 L mol-min". How long will take the concentration of A to drop from 0.75 M to 0.50 M? (6 points)
en a) woled rolo obizno OM 6. Consider the reaction 3A C. If the reaction is second order with a half-life of 20.00 hrs Starting the reaction with an initial concentration of A as 0.75M, calculate the time required for the concentration to decrease to 0.25M (8 points) noirsso
5. The rate constant for the reaction 3A 2B is 0.0447 s What is the half-life of the reaction? (2 points) dbl
The rate constant for the reaction 3A-4B is 2.50 x 103 L mol'min. How long will it take the concentration of A to drop from 0.75 M to 0.50 M? (6 points) 4.
A certain first-order reaction (A products) has a rate constant of 5.40 10-3 s I at 45 °C How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration? at 27 °C A certain second-order reaction (B-products) has a rate constant of 1.05x10-3 M 1.s and an initial half-life of 266 s What is the concentration of the reactant B after one half-life?
For a first-order reaction, the half-life is constant. It depends only on the rate constant k k and not on the reactant concentration. It is expressed as t1/2=0.693k t 1 / 2 = 0.693 k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t1/2=1k[A]0. A certain first-order reaction (A→products A → p r o d u c t s ) has a rate constant of 9.30×10−3...
For a first-order reaction, the half-life is constant. It depends only on the rate constant k and not on the reactant concentration. It is expressed as t 1/2 = 0.693 k For a second-order reaction, the half-life depends on the rate constant and the concentration of the reactant and so is expressed as t 1/2 = 1 k[A ] 0 Part A A certain first-order reaction ( A→products ) has a rate constant of 9.90×10−3 s −1 at 45 ∘...
Part A. A certain first-order reaction (A→products) has a rate constant of 3.90×10−3 s−1 at 45 ∘C. How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration? Part B. A certain second-order reaction (B→products) has a rate constant of 1.90×10−3 M−1⋅s−1 at 27 ∘C and an initial half-life of 298 s . What is the concentration of the reactant B after one half-life?