A 1M solution of Cu(NO3)2 is placed in a beaker with a strip of Cu metal. A 1M s

Question

A 1M solution of Cu(NO3)2 is placed in a beaker with a strip of Cu metal. A 1M solution of SnSO4 is placed in a second beaker with a strip of Sn metal. A salt bridge connects the two beakers, and wires to a voltmeter link the two metal electrodes. Which electrode serves as the anode, and which as the cathode? Which electrode gains mass and which loses mass as the cell reaction proceeds? What is the equation for the equation for the overall cell reaction? What is the emf generated by the cell under standard conditions?

Explanation / Answer

(a) Which electrode serves as the anode, and which is the cathode?

anode, Sn ; cathode, Cu

(b) Which electrode gains mass and which loses mass as the cell reaction proceeds?

Copper gains, tin loses

(c) Write the equation for the overall cell reaction.

Cu2+ + Sn(s) Sn2+ + Cu(s)

(d) What is the emf generated by the cell under standard conditions?

0.473V

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