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The standard e.m.f. of a galvanic cell, with standard electrode potentials of zinc equal to -0.76 V and that of copper equal to + 0.34 V, is
a)+0.76
b)-1.1V
c)-0.34V
d)+1.1V
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
The standard e.m.f. of a galvanic cell, with standard electrode potent...
Ecell = E right - E left
= E•cu2+/cu - E•zn2+/zn
= (+0.34v) - (-0.76v)
=0.34+0.76
=1.1v
= E•cu2+/cu - E•zn2+/zn
= (+0.34v) - (-0.76v)
=0.34+0.76
=1.1v
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The standard e.m.f. of a galvanic cell, with standard electrode potent...
Explanation:
The standard e.m.f. (electromotive force) of a galvanic cell can be calculated using the standard electrode potentials of the two half-cells involved. In this case, the half-cell reactions are as follows:
Zn(s) → Zn2+(aq) + 2e- (oxidation half-reaction)
Cu2+(aq) + 2e- → Cu(s) (reduction half-reaction)
The standard electrode potential of zinc (-0.76 V) is associated with the oxidation half-reaction, and the standard electrode potential of copper (0.34 V) is associated with the reduction half-reaction.
To calculate the standard e.m.f. of the cell, we subtract the standard electrode potential of the oxidation half-reaction from the standard electrode potential of the reduction half-reaction. Mathematically, it can be represented as:
E°cell = E°red - E°ox
where E°cell is the standard e.m.f. of the cell, E°red is the standard electrode potential of the reduction half-reaction, and E°ox is the standard electrode potential of the oxidation half-reaction.
In this case, the standard e.m.f. of the galvanic cell is:
E°cell = 0.34 V - (-0.76 V)
E°cell = 0.34 V + 0.76 V
E°cell = 1.1 V
Therefore, the correct answer is option 'D' - 1.1 V.
The standard e.m.f. (electromotive force) of a galvanic cell can be calculated using the standard electrode potentials of the two half-cells involved. In this case, the half-cell reactions are as follows:
Zn(s) → Zn2+(aq) + 2e- (oxidation half-reaction)
Cu2+(aq) + 2e- → Cu(s) (reduction half-reaction)
The standard electrode potential of zinc (-0.76 V) is associated with the oxidation half-reaction, and the standard electrode potential of copper (0.34 V) is associated with the reduction half-reaction.
To calculate the standard e.m.f. of the cell, we subtract the standard electrode potential of the oxidation half-reaction from the standard electrode potential of the reduction half-reaction. Mathematically, it can be represented as:
E°cell = E°red - E°ox
where E°cell is the standard e.m.f. of the cell, E°red is the standard electrode potential of the reduction half-reaction, and E°ox is the standard electrode potential of the oxidation half-reaction.
In this case, the standard e.m.f. of the galvanic cell is:
E°cell = 0.34 V - (-0.76 V)
E°cell = 0.34 V + 0.76 V
E°cell = 1.1 V
Therefore, the correct answer is option 'D' - 1.1 V.
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The standard e.m.f. of a galvanic cell, with standard electrode potentials of zinc equal to -0.76 V and that of copper equal to + 0.34 V, isa)+0.76b)-1.1Vc)-0.34Vd)+1.1VCorrect answer is option 'D'. Can you explain this answer?
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The standard e.m.f. of a galvanic cell, with standard electrode potentials of zinc equal to -0.76 V and that of copper equal to + 0.34 V, isa)+0.76b)-1.1Vc)-0.34Vd)+1.1VCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The standard e.m.f. of a galvanic cell, with standard electrode potentials of zinc equal to -0.76 V and that of copper equal to + 0.34 V, isa)+0.76b)-1.1Vc)-0.34Vd)+1.1VCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The standard e.m.f. of a galvanic cell, with standard electrode potentials of zinc equal to -0.76 V and that of copper equal to + 0.34 V, isa)+0.76b)-1.1Vc)-0.34Vd)+1.1VCorrect answer is option 'D'. Can you explain this answer?.
The standard e.m.f. of a galvanic cell, with standard electrode potentials of zinc equal to -0.76 V and that of copper equal to + 0.34 V, isa)+0.76b)-1.1Vc)-0.34Vd)+1.1VCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The standard e.m.f. of a galvanic cell, with standard electrode potentials of zinc equal to -0.76 V and that of copper equal to + 0.34 V, isa)+0.76b)-1.1Vc)-0.34Vd)+1.1VCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The standard e.m.f. of a galvanic cell, with standard electrode potentials of zinc equal to -0.76 V and that of copper equal to + 0.34 V, isa)+0.76b)-1.1Vc)-0.34Vd)+1.1VCorrect answer is option 'D'. Can you explain this answer?.
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