Exam #2 Review (Kinetic) Clicker Questions Answers

Exam #2 Review (Kinetic) Clicker Questions Answers -...

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Unformatted text preview: Consider this reaction What is the rate law for this reaction? 1 . r a t e = k [ N O 2 ] [ C O ] 2 . r a t e = k [ N O ] [ C O 2 ] 3 . r a t e = k [ N O 2 ] 2 4 . r a t e l a w c a n n o t b e . . . 33% 59% 0% 8% Remember: the rate law cannot be determined without measured data. In particular, it cannot be determined from the reaction stoichiometry. NO 2 ( g ) + CO ( g ) NO ( g ) + CO 2 ( g ) 1. rate = k [NO 2 ][CO] 2. rate = k [NO][CO 2 ] 3. rate = k [NO 2 ] 2 4. rate law cannot be determined from info. given Clicker Questions: [1. Press Go ; 2. Press 43 ; 3. Press Go ] For the reaction: 2A + B BA 2 Doubling [A] doubles the rate of the reaction. However, tripling [B] increases the rate 9 . What is the correct rate law expression? 1 . r a t e = k [ A ] [ B ] 2 . r a t e = k [ A ] 2 [ B ] 3 . r a t e = k [ A ] [ B ] 2 4 . r a t e = k [ A ] [ B ] 3 1% 15% 77% 7% The rate order on A is one, because a doubling of [A] leads to a doubling of reaction rate. However, the rate order on B is two, because a tripling of [B] leads to a 9 = (3) 2 increase in reaction rate. 1. rate = k [A][B] 2. rate = k [A] 2 [B] 3. rate = k [A][B] 2 4. rate = k [A][B] 3 It is observed that the rate of the first order reaction, CH 3 NC( g ) CH 3 CN( g ) (rate law: rate = k[CH...
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Exam #2 Review (Kinetic) Clicker Questions Answers -...

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