1. Tardigrade
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  4. A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number ?

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Q. A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the oxidation number ?

AIPMTAIPMT 2012Redox Reactions

Solution:

$KClO _{3}+ C _{2} O _{4} H _{2}+ H _{2} SO _{4} \rightarrow K _{2} SO _{4}+ CO _{2}+ Cl _{2}+ H _{2} O$

Maximum change in oxidation number $= Cl$