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Assigned problems _3

Assigned problems _3 - and C which react together to form...

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Chemistry 2080 Spring 2009 Problem Set #3 - due date: Friday February 19th at 2 pm Name:________________ Lab TA Name:__________________ Lab Day/Time:______________________ 1) A commercial process for making nitric acid starts with the platinum-catalyzed oxidation of ammonia (NH 3 ) by oxygen, to form nitric oxide (NO). The unbalanced chemical equation for this reaction is as follows: Pt NH 3 (g) + O 2 (g) –––––––> NO(g) + H 2 O(g) First balance this chemical equation, and then use the data of Table 7.2 in the Petrucci textbook to calculate the standard enthalpy change for the balanced equation.
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2) Here is a set of data showing initial rates versus concentration for reactants A, B,
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Unformatted text preview: and C, which react together to form product D by way of the equation: A + 2B + C ––––––> D Run number: [A] [B] [C] Initial Rate of (M) (M) (M) consumption of [A] ____ in M/sec_____ 1) 0.10 0.20 0.050 2.6 x 10-3 2) 0.10 0.40 0.050 5.3 x 10-3 3) 0.20 0.10 0.050 5.2 x 10-3 4) 0.10 0.20 0.100 2.07 x 10-2 Find the rate law for the initial rate, namely the values of the exponents a, b and c in the rate law: Rate = k[A] a x [B] b x [C] c Calculate the value of the rate constant k, and then calculate what the inital rate would be if the initial concentrations were [A] =[B] = [C] = 0.20 M...
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