Analytical ChemistryMedium

Question

Acidified K₂Cr₂O₇ solution turns green when Na₂SO₃ is added to it. this is due to the formation of

Options

A.CrO₄^2-

B.Cr₂ (SO₃)₃

C.Cr₂SO₄

D.Cr₂(SO₄)₃

Solution

K₂Cr₂O₇ + Na₂SO₃ + 4H₂SO₄ → 3Na₂SO₄ + K₂SO₄ + Cr₂(SO₄)₃ + 4H₂O

Create a free account to view solution

View Solution Free

Topic: Analytical Chemistry·Practice all Analytical Chemistry questions

More Analytical Chemistry Questions

Which of the following sets includes all the species that will change the orange colour of $K_{2}{Cr}_{2}O_{7}$ in acidi...Na2 SO4 + BaCl2 → White precipitate Aqueous solution. Gas ′G′ is evolvedThe gas ′G′ will s...A mixture of two salts is not water soluble but dissolves completely in dilute HCl to form a colourless solution. The mi...A colourless solution of a compound gives a precipitate with AgNO3 solution but no precipitate with a solution of Na2CO3...When a mixture of solid NaCl and solid K2Cr2O7 is heated with concentrated H2SO4, deep red vapours are obtained. This is...