1. In the shorthand notation for a galvanic cell, a double vertical line (II) re
ID: 103167 • Letter: 1
Question
1. In the shorthand notation for a galvanic cell, a double vertical line (II) represents
A. a double phase boundary B. an inert electrode C. a phase boundary D. a salt bridge
2. What is the shorthand notation that represents the following galvanic cell reaction?
Fe(s) + Cu2+ (aq) Fe2+ (aq) + Cu(s)
Fe(s) I Fe2+ (aq) II Cu2+ (aq) I Cu(s)
Cu(s) I Cu2+ (aq) II Fe2+ (aq) I Fe(s)
Fe(s) I NO3- (aq) II NO3- (aq) I Cu(s)
Cu(s) I Cu(NO3)2 (aq) II Fe(NO3)2 (aq) I Fe(s)
A.Fe(s) I Fe2+ (aq) II Cu2+ (aq) I Cu(s)
B.Cu(s) I Cu2+ (aq) II Fe2+ (aq) I Fe(s)
C.Fe(s) I NO3- (aq) II NO3- (aq) I Cu(s)
D.Cu(s) I Cu(NO3)2 (aq) II Fe(NO3)2 (aq) I Fe(s)
Explanation / Answer
1) In the shorthand notation for a galvanic cell, a double vertical line (II) represents a salt bridge (option D)
2)Shorthand notation that represents the following galvanic cell reaction Fe(s) + Cu2+ (aq) Fe2+ (aq) + Cu(s) is
A. Fe(s) I Fe2+ (aq) II Cu2+ (aq) I Cu(s)
In tthe above reaction Fe(s) is getting oxidized to Fe2+(aq) while Cu2+(aq) is getting reduced to Cu(s). In Galvanic cell shorthand notation oxidation half is written on the left while reduction half on the right separated by vertical line (II) .
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