hat is the rate constant of a first-order reaction if the half-life is 6.14 n?

Give the characteristic of a first order reaction having only one reactant. The rate of the reaction is not proportional to the concentration of the reactant. The rate of the reaction is proportional to the square of the concentration of the reactant. The rate of the reaction is proportional to the square root of the concentration of the reactant. The rate of the reaction is proportional to the natural logarithm of the concentration of the reactant. The rate of the reaction is directly proportional to the concentration of the reactant.

1. Sucrose (C12H22011) inversion is the process by which the substance is converted into either glucose or fructose (both have the formula CoH12O6). The process results in optical inversion (mirror image of structures), The reaction follows a first-order kinetics with a rate constant of 3.6 X 103 /s. C12H22011(aq) + H20(1) → 2C6H12Oglaq) a) If a 0.15 M C6H1206 solution would undergo inversion at 25°C, what is its concentration after 2.0 minutes? b) What is the half-life of the reaction?

Ibuprofen is an over the counter medicine used to alleviate pain. The metabolism of ibuprofen in the body follows first-order kinetics. For ibuprofen to be effective, the concentration within the body’s blood must stay above 5.3x10-5 M. A typical dose of ibuprofen is around 600 mg, which gives a concentration of 6.5x10-4 M. How long, in hours, will it take for a dose of 600 mg to reach the point where the ibuprofen is no longer effective? The rate constant for the metabolism of Ibuprofen if 0.0104 1/M min.