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The emf of the cathode in the zinc-air batteries is __________(a) 0.1V(b) 0.2V(c) 0.3V(d) 0.4VI had been asked this question in an interview.My doubt is from Corrosion topic in division Electro Chemical Cells and Corrosion of Applied Chemistry |
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Answer» RIGHT OPTION is (d) 0.4V Easiest explanation: The electromotive FORCE of the CATHODE of the zinc-air batteries is 0.4V. The cathode has the POSITIVE potential and the oxygen acts as the cathode. |
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