State a reason why, when hydrogen is passed over heated copper oxide, the resultant product formed, differs in colour from the original reactant. \[\ce{\underset{\text{Black}}{CuO} + H2 ->[heat]\underset{\text{Reddish brown}}{Cu} + H2O}\] H2 removes oxygen from CuO and reduces it to Cu metal (reddish brown in colour). Concept: Oxidation, Reduction and Redox Reactions Is there an error in this question or solution? |