Chemistry
Hydrogen is a good reducing agent. What do you understand by the above statement? Explain with the help of copper oxide as an example.
Hydrogen
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Answer
When hydrogen is passed over hot metallic oxides of copper, lead, iron, etc. it removes oxygen from them and thus reduces them to their corresponding metals. Hence, hydrogen acts as a good reducing agent.
When hydrogen gas is passed over heated copper oxide, copper oxide gets reduced to metallic copper by the removal of oxygen from it. The equation for the reaction is given below:
CuO + H2 ⟶ Cu + H2O
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Related Questions
The chemical equation given below represents a redox reaction.
PbO (Lead monoxide) + H2 ⟶ Pb (Lead) + H2O
(a) Name the reactant which gets :
(i) reduced
(ii) oxidised.(b) Which of the reactants acts as an oxidising agent ?
(a) Name a process by which hydrogen gas is manufactured.
(b) Give equations for the reactions.
(c) How is hydrogen separated from carbon dioxide and carbon monoxide?
State four uses of hydrogen.
Give three differences between Cathode and anode.