chap 12 - Chapter 12 Lecture Examples Example 1...

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Chapter 12 Lecture Examples Example 1 Ethene,H 2 C=CH 2 , can be converted to ethanol, CH 3 CH 2 OH, by a three-step process. Identify any intermediates or catalysts. H 2 C = CH 2 + H 3 O + H 3 C – CH 2 + + H 2 O H 3 C – CH 2 + + H 2 O CH 3 CH 2 OH 2 + CH 3 CH 2 OH 2 + + H 2 O CH 3 CH 2 OH + H 3 O + H 3 C – CH 2 + , CH 3 CH 2 OH 2 + intermediates H 3 O + catalyst Example 2 What are two ways to increase the rate of the following reaction? 2 Ca(s) + O 2 (g) 2 CaO(s) raise temperature; add catalyst; increase surface area of Ca(s) Example 3 Consider the following reaction: 2 HI(g) H 2 (g) + I 2 (g) Determine if each of the following collisions has the proper orientation for an effective reaction. A A B C A: No. We need H and H to collide and I and I to collide. B: Yes. C: No. Example 4 The propane used in a gas grill does not usually react with air in a combustion reaction unless first initiation with a spark. Explain using collision theory. The spark provides enough energy to the molecules to get over the
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This note was uploaded on 04/03/2011 for the course CHEM 112 taught by Professor Harwood during the Spring '11 term at Purdue.

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chap 12 - Chapter 12 Lecture Examples Example 1...

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