Which one of the following metals will not re | vedclass

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(C) The ability of a metal to reduce $H_2O$ depends on its standard reduction potential. Metals with a negative reduction potential (more active than

Vedclass · Accepted Answer

$Cu$

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(C) The ability of a metal to reduce $H_2O$ depends on its standard reduction potential. Metals with a negative reduction potential (more active than hydrogen) can displace hydrogen from water.$E_{Li^{+}/Li}^0 = -3.04 \, V$$E_{Ca^{2+}/Ca}^0 = -2.87 \, V$$E_{Fe^{2+}/Fe}^0 = -0.44 \, V$$E_{Cu^{2+}/Cu}^0 = +0.34 \, V$Since $Cu$ has a positive reduction potential and is placed below hydrogen in the electrochemical series,it cannot displace hydrogen from water. Thus,$Cu + H_2O 	o 	ext{No reaction}$.

Which one of the following metals will not reduce $H_2O$?

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