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zorro
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Homework Statement
Which of the following statements is correct if
Standard reduction potentials of Cu and Sn are 0.337V and -0.136V resp. (both from +2 charge)
a) Cu2+ ions can be reduced by H2(g)
b) Cu can be oxidised by H+
c) Sn2+ ions can be oxidised by H2(g)
d) Cu can reduce Sn2+
I am confused between reduction/oxidation of ions/metals by H2 or H+. I don't have any idea of correctly employing the given reduction potential values in each case. I tried and deduced that c) and d) must be incorrect. No idea about a) and b)
Please provide me clear explanation of this.
Thanks in advance.