(a) For a generic second-order reaction A--->B, whatquantity, when graphed versus time, will yield a straightline? (b) What is the slope of the straight line from part(a)? (c) Does the half-life of a second-order reaction increase,decrease, or remain the same as the reactionproceeds?

Identify each of the following elementary reactions as unimolecular, bimolecular, or termolecular, and write the rate expression. (a) O + H₂S Reaction HO + HS (b) OH + NO2 + N₂ HNO3 + N2 (c) CH3CHO → CH3 + CHO Molecularity. ][ Rate expression rate = rate = rate =

(a) Given the following diagrams at t = 0 min andt = 30 min, what is the half-life of the reaction if it followsfirst-order kinetics? (b) After four half-life periods for a first-order reaction,what fraction of reactant remains?

Be sure to answer all parts.The reaction2A → Bis second order in A with a rate constant of 37.9 M−1 · s−1 at 25°C.(a) Starting with [A]0 = 0.00701 M, how long will it take for the concentration of A to drop to 0.00180 M?s(b) Calculate the half-life of the reaction for [A]0 = 0.00701 M.s(c) Calculate the half-life of the reaction for [A]0 = 0.00215 M.

17. If one defines the rate of the reaction 30 CH3OH +B10H14 0 10 B(OCH3)3 + 22 H2 as -A[B10 H14] At Rate = then the rate is also correctly expressed by 1 A[CH3 OH] At 1 ΔΒ(0CH> )s] At 1 A[H;] (a) Rate = 30 (b) Rate = 10 (c) Rate = 22 At (d) none of these. (e) all of these.

1.) The reaction A(aq) ---> B(aq) + C(aq) is a first order reaction. The half-life of A(aq) is 94.8 s at 25.0oC and its half-life is 65.6 s at 45.0oC. What is its half-life (in s) at 65.0oC? 3.) The half-life of 14C is 5730 years. A sample contains 90.8 % of the 14C that it would contain if it were still part of a living being. What is the age (in years) of this sample?

The decomposition of B has rate constants of 1.78 x 10-3 min-1 at 25°C and 5.09 x 10-3 min-1 at 45°C.  2 B(aq) -> 3 A(aq) (a) What is the activation energy of the reaction? (b) What is the order of the reaction? (c) How long will it take for a solution containing 0.470 M B to form 0.163 M A at 25°C?

Be sure to answer all parts. The reaction 2A → B is second order in A with a rate constant of 31.7 M−1 · s−1 at 25°C. (a) Starting with [A]0 = 0.00713 M, how long will it take for the concentration of A to drop to 0.00180 M?  (b) Calculate the half-life of the reaction for [A]0 = 0.00713 M.  (c) Calculate the half-life of the reaction for [A]0 = 0.00203 M.

1. (a) Show that decomposition of the organic compound 1,3-pentadiene is a second-order reaction and determine the rate constant. The concentration of 1,3-pentadiene was measured as a function of time. The data are as follows: (b) What is the value of the rate constant for the decomposition of 1,3-pentadiene.(c) What is the initial concentration for the reaction? Report to 3 significant figures.(d) What is the concentration of 1,3-pentadiene after 3.750 x10^3 s? Time(s)   [1,3-pentadiene] (M) 0 .480 1000 .179 2000 .110 3000 .0795 4000 .0622 5000 .0510

Define the following terms :(a) Pseudo first order reaction.(b) Half life period of reaction (t1/2).