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What are redox reactions ? Identify the ...

What are redox reactions ? Identify the substances that are oxidised and the substances that are reduced in the following reactions :
(1) `2H_(2)S_((g))+SO_(2_((g)))rarr3S_((s))+2H_(2)O_((1))`
(2) `CuO_((s))+H_(2_((g)))rarrCu_((s))+H_(2)O_((1))`
(3) `underset("dioxide")underset("Manganese")(MnO_(2))+4HClrarrunderset("chloride")underset("Manganese")(MnCl_(2))+2H_(2)O+Cl_(2)uarr`

Text Solution

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When oxidation and reduction take place simultaneouly in a given chemical reaction , it is known as a redox reaction.



(1) Oxidation : `rarrH_(2)S,H_(2)O and HCl.`
(2) Reduction `rarrSO_(2),CuOand MnO_(2)`
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