Look at the equation:
CuO+H2⟶Cu+H2O \text{CuO} + \text{H}_2 \longrightarrow \text{Cu} + \text{H}_2\text{O} CuO+H2⟶Cu+H2OWhich substance is the reducing agent in this reaction?
CuO\text{CuO}CuO
H2\text{H}_2H2
Cu\text{Cu}Cu
H2O\text{H}_2\text{O}H2O
Practise OCR GCSE Chemistry Types of chemical reactions with exam-style questions for Foundation and Higher tier. 58 questions, matched to the OCR GCSE Chemistry (J248) specification and written in Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.