1 / 7

Chemical Kinetics (Past Papers)

p.01. Chemical Kinetics (Past Papers). C. Y. Yeung (CHW, 2009). (b) Plot ln[H 2 O 2 ] against t to obtain a straight line. for first order reaction, slope = -k. p.02. p. 77 Q.3 (1995 --- Chemical Method).

nikki
Télécharger la présentation

Chemical Kinetics (Past Papers)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. p.01 Chemical Kinetics (Past Papers) C. Y. Yeung (CHW, 2009)

  2. (b) Plot ln[H2O2] against t to obtain a straight line. for first order reaction, slope = -k p.02 p. 77 Q.3 (1995 --- Chemical Method) (a) Withdraw a known volume of the reaction mixture and add to excess dilute H2SO4, titrate against standard MnO4-.

  3. p.03 p. 77 Q.2 (1995 --- Differential Rate Eqn) (a) I2 : Use B, C : rate independent of [I2] CH3COCH3: Use B, D : rate  [CH3COCH3] H+ : Use B, E : rate  [H+]  Rate = k [CH3COCH3] [H+] (b) Total volume = 100cm3 Use B: [CH3COCH3] = (100.789/58)/(100/1000) = 1.36M 4.9610-6 = k (1.36) (0.1) k = 3.65  10-5 M-1s-1

  4. p.04 p. 77 Q.5 (1996 --- Integrated Rate Eqn)  The reaction is first order. k = -slope = 210-3 min-1

  5. p. 80 Q.13 (2002 --- Integrated Rate Eqn) p.05 Note: Vol. of gas at time t = Vt  [product] Vol. of gas not formed yet = (Vtotal-Vt)  [reactant] A straight line plot indicates that the reaction is first order w.r.t. C6H5N2+Cl-. k = -slope = 0.073 s-1

  6. p. 77 Q.1 (1994 --- Integrated Rate Eqn) p.06 k = slope = 0.02 M-1 s-1

  7. p.07 Assignment p.77 Q.6(a)-(c), Q.8, Q.9(a)-(b), Q.10, Q.11(a),(b), Q.12, Q.14(b)-(d) [due date: 24/2(Tue)] Next …. Activation Energy and Arrhenius Equation (p. 49-53)

More Related