Assemble a battery using the following redox couples: Mg 2+ /Mg and Zn 2+ /Zn Ex

Question

Assemble a battery using the following redox couples:

Mg2+/Mg and Zn2+/Zn

Example of input format:
For electrons, use e^1-
For a reaction arrow, use "->" (hypen + greater than)
For cations, such as Ca2+, use Ca^2+
For anions, such as Br1-, use Br^1-
Don't forget to include coefficients great than 1.

Parts a-c and e of this question do nothave any check marks. Be sure to look at your score after the firstsubmission.

a) Which compartment is the anode. 1---Select---AB b) Which compartment do the K1+ ions migratetowards? 2---Select---AB c) In which compartment does the metal electrode become smalleras the reaction proceeds? 3---Select---AB Assemble a battery using the following redox couples: Mg2+/Mg and Zn2+/Zn Example of input format: For electrons, use e^1- For a reaction arrow, use -> (hypen + greater than) For cations, such as Ca2+, use Ca^2+ For anions, such as Br1-, use Br^1- Don't forget to include coefficients great than 1. Parts a-c and e of this question do nothave any check marks. Be sure to look at your score after the firstsubmission. a) Which compartment is the anode. 1 b) Which compartment do the K1+ ions migratetowards? 2 c) In which compartment does the metal electrode become smalleras the reaction proceeds? 3 d) Write the half reaction that occurs at the cathode. 4Click here to preview your answer. e) Write the net redox reaction. 5Click here to preview your answer. + 6Click here to preview your answer. right arrow 7Click here to preview your answer. + 8Click here to preview your answer. Ox1 Red2 Red1 Ox2 f) What is the cell potential? (Input format+#.##, or -#.##)

Explanation / Answer

Mg2+/Mg and Zn2+/Zn Mg(s) -------> Mg2+(aq) + 2e-     E0 = 2.37 Zn2+(aq) + 2 e- ----->Zn(s)       E0 = -0.76 Mg reaction occurs at the anode (oxidation). K+ migrates towardcathode. The anode, with Mg metal, is consumed, so it getssmaller. Reaction at cathode: Zn2+(aq) + 2e- ----->Zn(s)     Net reaction: Mg + Zn2+ --->Mg2+ + Zn Cell potential: 2.37 + (-0.76) = 1.61 V

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