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Which of the following is a correct method to calculate the EMF of a galvanic cell?(a) Standard EMF of the cell = [Standard reduction potential of the reduction half reaction] + [Standard reduction potential of the oxidation half reaction](b) Standard EMF of the cell = [Standard oxidation potential of the oxidation half reaction] – [Standard reduction potential of the reduction half reaction](c) E°cell = E°cathode – E°anode(d) Standard EMF of the cell = [Standard reduction potential of the right hand side electrode] + [Standard reduction potential of the left hand side electrode]I had been asked this question in homework.Question is taken from Electrochemistry topic in division Electrochemistry of Chemistry – Class 12 |
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Answer» CORRECT answer is (c) E°cell = E°cathode – E°anode For explanation I would SAY: The correct methods to calculate the EMF of a galvanic cell are: Standard EMF of the cell = [Standard REDUCTION potential of the reduction half reaction] – [Standard reduction potential of the oxidation half reaction]. Standard EMF of the cell = [Standard oxidation potential of the oxidation half reaction] + [Standard reduction potential of the reduction half reaction]. E°cell = E°cathode – E°anode. Standard EMF of the cell = [Standard reduction potential of the right hand SIDE electrode] – [Standard reduction potential of the left hand side electrode]. |
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