What happens when SO2 gas is passed through a potassium dichromate solution-Colour changes from orange to green-Colour changes from orange to red-Colour changes from red to orange-Colour changes from red to violet-

The correct option is A Colour changes from orange to green When SO2 gas is passed through potassium dichromate solution, the colour of potassium dichromate ch ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard X

Chemistry

Acidic Nature of Sulphuric Acid

What happens ...

Question

What happens when SO₂ gas is passed through a potassium dichromate solution?

Colour changes from orange to green

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Colour changes from orange to red

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Colour changes from red to orange

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Colour changes from red to violet

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
Colour changes from orange to green

When SO₂gas is passed through potassium dichromate solution, the colour of potassium dichromate changes from orange to green (chromium sulphate). This is the potassium dichromate test for sulphuric acid.

2 K₂Cr₂O₇ + 8H₂SO₄ → 2 K₂SO₄ + 2 Cr₂(SO₄)₃ + 8 H₂O + 3O₂

Suggest Corrections

Similar questions

Q. When sulphur dioxide gas is passed through acidified potassium dichromate solution, the colour of the solution changes from :
(1) orange to yellow
(2) orange to green
(3) green to orange
(4) yellow to green

What happens when SO₂ gas is passed through potassium dichromate solution?

Q. The yellow colour solution of

N a_{2} C r O_{4}

changes to orange red on passing

C O_{2}

gas due to the formation of:

Q. A liquid X, when added to a substance Y, changes the colour of Y from orange to red. X is , while Y is a/an .

Q. The colour of

C r_{2} O_{7}^{2 -}

changes from orange to blue-green when added to compound (A). The blue-green colour is due to the formation of :

Join BYJU'S Learning Program

What happens when SO2 gas is passed through a potassium dichromate solution?

What happens when SO₂ gas is passed through a potassium dichromate solution?