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CBSE Class 10 Answered

Carbon reduces copper oxide to copper but not calcium oxide to calcium. Why?
Asked by Swaraj pati | 15 Feb, 2012, 09:24: AM
answered-by-expert Expert Answer

Carbon has electrode potential (reduction potential) lower (can reduce more easily) than Cu but higher than Ca, and hence, C can reduce Cu but not Ca. The reduction potentials are -

C-(0.13 V)

Cu-(0.16 V)

Ca-(-2.76 V)

Answered by | 15 Feb, 2012, 09:44: AM

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