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Give examples of oxidation....

Give examples of oxidation.

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(1) When carbon burns in air , it forms carbon dioxide . In this reaction carbon accepts oxygen,therefore , this is an oxidation reaction.
`C_((s))+O_(2_((g)))rarrCO_(2_((g)))`
(2) When sodium reacts with ethyl alcohol, sodium ethoxide and hydrogen gas is formed . In this reaction , hydrogen is removed from ethyl alcohol ,therefore this is an oxidation reaction.
`underset("alcohol")underset("Ethyl")(2C_(2)H_(5)OH_((1)))+underset("Sodium")(2Na)rarrunderset("ethoxide")underset("Sodium")(2C_(2)H_(5)ONa)+underset("Hydrogen")(H_(2))uarr`
(3) Acidified potassium dichromate
`(K_(2)Cr_(2)O_(7)//H_(2)SO_(4))` oxidises ethly alcohol to acetic acid.
`CH_(3)-CH_(2)-OHunderset(K_(2)Cr_(2)O_(7)//H_(2)SO_(4))overset(2(O))rarr+CH_(3)-COOH+H_(2)O`
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