1aa3-2012-tut3-q

1aa3-2012-tut3-q - CHEMISTRY 1AA3 Week of JANUARY 23, 2012...

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CHEMISTRY 1AA3 Week of JANUARY 23, 2012 TUTORIAL PROBLEM SET 3 – QUESTIONS ______________________________________________________________________________ Page 1 of 2 1. What are the overall orders of the reactions to which the following rate laws apply? (a) rate = k[H 2 ][I 2 ] (b) rate = k[NO 2 ] 2 [H 2 ] (c) rate = k[Cl 2 ] (3/2) [O 2 ] 2. The equation for the reaction of NO(g) with O 2 (g) at 660K is: 2 NO(g) + O 2 (g) 2 NO 2 (g) The reaction rate data below was measured by observing the disappearance of NO: Concentration (mol.L -1 ) Initial Rxn Rate Expt. No. [NO] [O 2 ] (mol L -1 s -1 ) 1 0.020 0.020 2.5 x 10 -4 2 0.020 0.040 5.0 x 10 -4 3 0.060 0.040 4.5 x 10 -3 (a) Derive the rate law for the reaction in terms of the disappearance of NO(g). (b) What is the overall order of the reaction? (c) What is the numerical value of the specific rate constant k at 660K? Give the units of k. (d)
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This document was uploaded on 03/29/2012.

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1aa3-2012-tut3-q - CHEMISTRY 1AA3 Week of JANUARY 23, 2012...

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