Batteries convert chemical energy into electrical energy. They have two electrodes called a cathode and an anode where chemical reactions that either use or produce electrons take place. The electrodes are connected by a solution called an electrolyte, through which ions can move and complete an electrical circuit. To generate electrical energy, a battery relies on oxidation at the anode (releases electrons), and a reduction at the cathode (uses electrons). Potential difference, volts (V), is measured between the two electrodes (cathode – anode) with a voltmeter.
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1. Which combination gives the most voltage? ???
2. Which combination gives the least voltage? ???
3. Identify the reducing and oxidizing agent for each combination. ???
4. Calculate the expected voltage for each combination. (pg. 674) ???
5. Compare and explain the measured voltage with the expected voltage. ???
6. Write the balanced voltaic cell reaction equation for each combination. ???
How to do this assignment?
Chemistry in March