Desemine the onder of cast hased on the lowing whene Pis the Sotal pressure The

Question

Desemine the onder of cast hased on the lowing whene Pis the Sotal pressure The Relation Between Reactant Concentration and Time evie Questons 3.21 Wrie an equatioe relating the concentration of a re ction Detine all the terms and give their units D the same for a second-order reaction oeder kinetics. Initially different amounts of X molecules are placed in three equal-volume on tainers at the same temperature. (a) relative rates of the reaction in these three contain ers? (b) How would the relative rates be afected if the volume of each container were doubled ic) What are the rclative half-lives of the reactio in (i) to (uai)? 13.22 Detise half-bfe. Write the equotioe relating the hal life of a frst-order reaction to the rale constane 13.23 Write the equations relating the half-hife of a second Whot are onder reaction to the rate coestant How does it differ fross the equation for a fint-ornder reaction 13.24 For a first-order reaction, how long will it take for the concestration of neactant to fall to one-eighth its original value? Express your answer in serms of the half-Mile (t) and in ters of the rate constant Problems 3.25 What is the half-life of a compound if 75 percent of CARS a given sample of the compound decomposes in 60 min? Assume firsa-order kinetics tia)

Explanation / Answer

I am solving the first question 13.26 as per Chegg guidelines, post multiple question to get the remaining answers

Q13.26

a) Half-life of first order reaction = ln(2)/k

k = ln(2)/Half-life = ln(2)/35.0 = 1.98 * 10^(-2) s^(-1)

b) For the first order reaction

ln[A0/At] = kt

Amount of phosphin left = 5% of A0 = 0.05A0

ln[A0/0.05A0] = ln2/35 * t

t = 35 * ln(100)/ln(2) = 232.53 seconds

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