A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes a maximum change in the oxidation number? from Chemistry Redox Reactions Class 12 Nagaland Board
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A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes a maximum change in the oxidation number?

  • S

  • H

  • Cl

  • C


C.

Cl

When a mixture of potassium chlorate, oxalic acid and sulphuric acid is heated, the following reaction occurs:

straight K with plus 1 on top Cl with plus 5 on top straight O with negative 2 on top subscript 3 space plus straight H with plus 1 on top subscript 2 straight C with plus 3 on top subscript 2 straight O with negative 2 on top subscript 4 space plus straight H with plus 1 on top subscript 2 straight S with plus 6 on top straight O with negative 2 on top subscript 4
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space rightwards arrow space straight K with plus 1 on top subscript 2 straight S with plus 6 on top straight O with negative 2 on top subscript 4 space plus straight K with plus 1 on top Cl with negative 1 on top space plus straight C with plus 4 on top straight O with negative 2 on top subscript 2 space plus straight H with plus 1 on top subscript 2 straight O with negative 2 on top

Thus, Cl is the element which undergoes a maximum change in the oxidation state.

When a mixture of potassium chlorate, oxalic acid and sulphuric acid is heated, the following reaction occurs:

straight K with plus 1 on top Cl with plus 5 on top straight O with negative 2 on top subscript 3 space plus straight H with plus 1 on top subscript 2 straight C with plus 3 on top subscript 2 straight O with negative 2 on top subscript 4 space plus straight H with plus 1 on top subscript 2 straight S with plus 6 on top straight O with negative 2 on top subscript 4
space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space rightwards arrow space straight K with plus 1 on top subscript 2 straight S with plus 6 on top straight O with negative 2 on top subscript 4 space plus straight K with plus 1 on top Cl with negative 1 on top space plus straight C with plus 4 on top straight O with negative 2 on top subscript 2 space plus straight H with plus 1 on top subscript 2 straight O with negative 2 on top

Thus, Cl is the element which undergoes a maximum change in the oxidation state.

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