Navigate

The change in oxidation state of sulphur when sulphur dioxide is passed

The change in oxidation state of sulphur when sulphur dioxide is passed in an acidified K₂Cr₂O₇ solution is from

Options

(a) 4 to 0
(b) 4 to 2
(c) 4 to 6
(d) 6 to 4

Correct Answer:

4 to 6

Explanation:

Acidified K₂Cr₂O₇ solution oxidised SO₂ into Cr₂(SO₄)₃.
3SO₂ + K₂Cr₂O₇ + H₂O → K₂SO₄ + Cr₂(SO₄)₃ + H₂O
Oxidation of S =+4
Oxidation of (SO₄) = +6

AFMC2011
admin:

Related Questions

  1. By which one of the following compounds both CH₄ and CH₃ – CH₃ can be prepared
  2. In an isobaric process,when temperature changes from T₁ to T₂, ΔS is equal to
  3. The correct order of increasing bond angles in the following species is
  4. Which one of the alkali metals, forms only, the normal oxide, M₂O on heating
  5. Reaction of methyl bromide with aqueous sodium hydroxide involves