An electrochemical cell is set up with a Cu(s)|Cu(NO3)2(aq) electrode (Eored = +

Question

An electrochemical cell is set up with a Cu(s)|Cu(NO3)2(aq) electrode (Eored = +0.34 V) and an Ag(s)|Ag(NO3)(aq) electrode (Eored = +0.80 V). Select the TRUE statement(s) concerning the operation of this cell:

i) The concentration [Cu2+] decreases in the Cu half-cell.

ii) Ag+ ions gain electrons at the cathode.

iii) Ag metal is more easily oxidized than Cu metal.

iv) The mass of the Cu electrode increases during operation of the cell.

v) Nitrate ions migrate from the Ag half-cell to the Cu half-cell through the salt bridge

Explanation / Answer

True statements : ii) Ag+ ions gain electrons at the cathode

v) Nitrate ions migrate from the Ag half-cell to the Cu half-cell through the salt bridge

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