CH-1763

Oxidation and reduction

Chemistry · Secondary 4 · Medium · Oxidation and reduction

Lead(II) oxide is reduced by hydrogen according to the equation

PbO + H_2 \rightarrow Pb + H_2O

. In this reaction, what role does hydrogen play?

reducing agent, because it removes oxygen from $PbO$
oxidising agent, because it gains oxygen to form $H_2O$
reducing agent, because it gains electrons
oxidising agent, because it loses hydrogen

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