bond-energies-worksheet

Bond-energies-worksh - Bond Energies 1 2 3 4 5 Read pages 586 587 in your textbook Which process releases energy breaking a bond or forming a bond

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Bond Energies 1. Read pages 586 – 587 in your textbook. 2. Which process releases energy: breaking a bond or forming a bond? 3. Which process requires energy: breaking a bond or forming a bond? 4. Define bond energy. 5. If the energy used to break bonds is greater than the energy released in the formation of new bonds, is the reaction endothermic or exothermic? 6. If the energy used to break bonds is less than the energy released in the formation of new bonds, is the reaction endothermic or exothermic? 7. Look at the table of selected bond energies to the right. a. Which is the strongest single bond on this table? b. Which is the weakest single bond on this table? 8. (Note: This is not a question . It is an explanation of how to calculate the total energy from a reaction, based on bond energies. There are supposed to be empty spaces in the table.) Let’s examine the electrolysis of water (fig 4 on page 587). The general reaction is 2H 2 O 2H 2 + O 2 or H O H H O H H H H H + O = O
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This note was uploaded on 11/16/2011 for the course CHM 2046 taught by Professor Chamusco during the Summer '10 term at Santa Fe College.

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