8.13. Identify the substance oxidised, reduced, oxidising agent and reducing agent for each of the following reactions.

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Substance oxidised	Substance reduced	Oxidising agent	Reducing agent
(a) C₆H₁₂O₆	AgBr	C₆H₁₂O₆
(b) HCHO	[Ag (NH₃)₂]⁺	[Ag (NH₃)₂]⁺	HCHO
(c) HCHO	Cu²⁺	HCHO
(d) N₂H₄	H₂O₂	N₂H₄
(e) Pb	PbO₂	Pb

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