230_Sp10_L33_post - CHEM 230 Sp10 Lecture 33 Chapter 13...

Info icon This preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEM 230 Sp10 Lecture 33 Chapter 13: Chemical Kinetics 1) Summary 2) Temperature effect on rates 3) Catalysts Session ID: 230
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Review Rate: stoichiometric relationships a A + b B c C + d D Reaction rate = - 1 a " [ A ] " t = # 1 b " [ B ] " t = 1 c " [ C ] " t = 1 d " [ D ] " t Rate Law: order in each reactant -determine experimentally by a) comparing intial concentrations of reactants and initial rates OR b) by measuring [reactant] over time and trying out integrated rate law plots
Image of page 2
Experimental Determination of Order and k Initial [A] Initial [B] Measured Rate 1 M 1 M 10 M/s 2 M 1 M 40 M/s 1 M 2 M 10 M/s a) A + B C b) [ A ] t = " kt + [ A ] 0 ln[ A ] t = " kt + ln[ A ] 0 1 [A] t = 1 [A] 0 + kt Zero order First order Second order
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
The hydrolysis of sucrose (C 12 H 22 O 11 ) produces fructose and glucose (each C 6 H 12 O 6 ). Two mechanisms are proposed: I) Step 1: C 12 H 22 O 11 C 6 H 12 O 6 + C 6 H 10 O 5 (slow) Step 2: C 6 H 10 O 5 + H 2 O C 6 H 12 O 6 (fast) II) C 12 H 22 O 11 + H 2 O C 6 H 12 O 6 + C 6 H 12 O 6 Would these mechanisms be distinguishable in a dilute solution? A) Yes B) No Concept Question
Image of page 4
The hydrolysis of sucrose (C 12 H 22 O 11 ) produces fructose and glucose (each C 6 H 12 O 6 ). Two mechanisms are proposed: I) Step 1: C 12 H 22 O 11 C 6 H 12 O 6 + C 6 H 10 O 5 (slow) rate=k[C 12 H 22 O 11 ] Step 2: C 6 H 10 O 5 + H 2 O C 6 H 12 O 6 (fast) II) C 12 H 22 O 11 + H 2 O C 6 H 12 O 6 + C 6 H 12 O 6 rate=k[C 12 H 22 O 11 ][H 2 O] pseudo first order Would these mechanisms be distinguishable in a dilute solution using kinetic data?
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern