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(a) Give an example of an oxidation reaction?
(b) Is oxidation an exothermic or an endothermic reaction?
(c) Explain, by giving example, how oxidation and reduction proceed side by side.
(a) Oxidation Reaction: The addition of oxygen or removal of hydrogen to a substance is called oxidation.
Example: Carbon is oxidised to give carbon dioxide, heat energy is released during the process.
$C\ ( s) \ +\ O_{2} \ ( g) \ \rightarrow \ CO_{2} \ +\ Heat$
(b) Oxidation reaction is an exothermic reaction as heat is released during this reaction (as seen above).
(c)$CuO\ +\ H_{2}\xrightarrow{Heat} \ Cu\ +\ H_{2} O$
$Copper\ oxide\ +\ Hydrogen\xrightarrow{Heat} \ Copper\ +\ Water\ $
In the above reaction, copper oxide is reduced to copper whereas hydrogen is oxidised to water. Such a reaction is known as the Redox reaction.
Updated on: 10-Oct-2022
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