One possible mechanism for the decomposition of ethane, C2H6, into ethylene, C2H4, and hydrogen, C2H6 - C2H4 + H2 includes the following steps. (1) C2Hg – 2CH3• (2) CH3• + C2H6 →CH4 + C2H5• (3) C2H5. - C2H4 + H• (4) H• + C2Hg - C2H5• + H2 (5) H• + C2H5• → C2H6

Chemistry for Engineering Students
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ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
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Chapter11: Chemical Kinetics
Section: Chapter Questions
Problem 11.59PAE: Can a reaction mechanism ever be proven correct? Can it be proven incorrect?
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One possible mechanism for the decomposition of ethane, C2Hs, into ethylene, C2H4, and hydrogen,
C2H6 - C2H4 + H2
includes the following steps.
(1) C2H6 - 2CH3•
(2) CH3• +C2H6 -CH4 + C2H5•
(3) C2H5• - C2H4 + H•
(4) H• + C2Hg →C2H5• + H2
(5) H• + C2H5• C2H6
Transcribed Image Text:One possible mechanism for the decomposition of ethane, C2Hs, into ethylene, C2H4, and hydrogen, C2H6 - C2H4 + H2 includes the following steps. (1) C2H6 - 2CH3• (2) CH3• +C2H6 -CH4 + C2H5• (3) C2H5• - C2H4 + H• (4) H• + C2Hg →C2H5• + H2 (5) H• + C2H5• C2H6
(a)
Which step(s) initiate the reaction?
O Step (3)
O Step (4)
O Step (5)
O Step (2)
O Step (1)
eTextbook and Media
(b)
Which are propagation steps?
O Step (4)
O Step (1)
O Step (3)
O Step (5)
O Step (2)
(c)
Which is the termination step?
O Step (1)
O Step (5)
O Step (2)
O Step (3)
O Step (4)
Transcribed Image Text:(a) Which step(s) initiate the reaction? O Step (3) O Step (4) O Step (5) O Step (2) O Step (1) eTextbook and Media (b) Which are propagation steps? O Step (4) O Step (1) O Step (3) O Step (5) O Step (2) (c) Which is the termination step? O Step (1) O Step (5) O Step (2) O Step (3) O Step (4)
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