Download presentation

Presentation is loading. Please wait.

Published byStephanie Schmidt Modified over 3 years ago

1
Cell potentials and Reduction potentials

2
Answers 1 - 5 1.The difference is ° - indicating 25°C and 1 M concentrations (1) 2.Voltages can be increased by arranging cells in series (1) (or changing concentrations) 3.A measure of the tendency of a given half- reaction to occur as a reduction (1) 4.The half-cell with the greater reduction potential will gain electrons (1) 5.The Cu half-cell has the greater reduction potential (1), since it is gaining electrons (1) /6

3
Answers 6 - 10 6.The Fe half-cell has the greater reduction potential (1) 7.E°cell = E°reduced - E°oxidized (1) (E°cell = standard reduction potential of substance reduced - standard reduction potential of substance oxidized) 8.0.62 V (1) 9.There is no way to measure the standard reduction potential of an isolated half-cell (1) A reference/standard electrode is chosen (1) 10.Cu has the greatest reduction potential (1) /6

4
Answers 11 - 14 11.0.00 V is the reduction potential for the hydrogen electrode (1) 0.00 V is arbitrarily set; its 0 by definition (1) 12.It has a lower reduction potential than the hydrogen electrode (1) 13.Either oxidation OR reduction can occur depending upon what the half-cell is coupled with (1) 14.E°cell = E°reduced - E°oxidized E°cell = E°Fe 2+ – E°Mg 2+ 1.96 V = -0.41 V – E°Mg 2+ (1) E°Mg 2+ = -0.41 V – 1.96 V = -2.37 V /5

5
Answers 15 - 18 15.5.92 V (1) by a F 2 - Li cell (1) 1.67 V 16.a) 1.42 V - -0.25 V = 1.67 V (1) 0.46 V b) 0.80 V - 0.34 V = 0.46 V (1) 0.71 V c) -1.66 V - -2.37 V = 0.71 V (1) 0.78 V d) 0.34 - - 0.44 V = 0.78 V or 0.43 V 0.77 V - 0.34 V = 0.43 V (1) 17.Yes (1) because the larger reduction potential will be reduced, the smaller will be oxidized (E°cell = E°reduced - E°oxidized) 18.Yes (1) because you are subtracting a smaller (or more negative) number from a larger number /8, /25 For more lessons, visit www.chalkbored.com www.chalkbored.com

Similar presentations

OK

Cell potentials and Reduction potentials The light at the end of the tunnel Read 17.7 (pg. 716), do PE 7, 8 - use Ex. 17.8 (ignore Ex. 17.7). Also 17.62,

Cell potentials and Reduction potentials The light at the end of the tunnel Read 17.7 (pg. 716), do PE 7, 8 - use Ex. 17.8 (ignore Ex. 17.7). Also 17.62,

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on coalition governments Ppt on creativity and innovation Ppt on different types of computer softwares for pc Free download ppt on human evolution Ppt on natural and artificial satellites launched Ppt on causes of road accidents Ppt on video teleconferencing equipment Ppt on applied operational research pdf Ppt on exploring fibonacci numbers Ppt on class 10 hindi chapters