Chapter 18 Problems

Chapter 18 Problems - 1. What is the difference between an

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1. What is the difference between an oxidation-reduction reaction and a half-reaction? A redox reaction is the is the complete reaction balanced with respect to mass and charge. A half reaction is only ½ either the oxidation or the reduction. 5. Which of these is true of the conversion of NpO 2 + to Np +4 ? a) It is an oxidation process. b) It can only occur in an electrochemical cell. c) It is a reduction process. d) It is an oxidation-reduction process. 6. In an electrochemical cell that functions as a voltaic cell , which of the following is true ? a) electrons from the cathode to the anode b) electrons move thru a salt bridge c) electrons can move either from the cathode to the anode or from the anode to the cathode d) reduction occurs at the cathode oxidation at the anode 12. Explain why electrode potentials can be used to make predictions of spontaneous change even for reactions that are not carried out in electrochemical cells. Are there some reactions for which they cannot be used ? Rxns outside the cell can still involve a redox process.
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This note was uploaded on 04/07/2008 for the course CHEM 1124 taught by Professor Mohan during the Fall '07 term at Seton Hall.

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Chapter 18 Problems - 1. What is the difference between an

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