Exams › JEE Advanced › Chemistry

Acidified chromic acid reacts with H2O2 in the presence of an organic solvent to give a blue-coloured product X together with Y. Identify X and Y.

1. CrO5 and H2O
2. Cr2O3 and H2O
3. CrO2 and H2O
4. CrO and H2O

Correct answer: CrO5 and H2O

Solution

Acidified dichromate/chromic acid with hydrogen peroxide gives the deep-blue chromium peroxide CrO5 (CrO(O2)2) plus water; the organic solvent stabilizes the blue colour.

Related JEE Advanced Chemistry questions

• The count of d-electrons in Fe2+ differs from the number of:
• Which sequence of reactions accurately depicts the chemical processes involving iron and its associated compounds?
• When H2S interacts with an acidic solution of K2Cr2O7, which of the following compounds is not produced?
• When an excess amount of sodium thiosulfate is combined with copper sulfate in water, the resulting product is:
• Among the given lanthanoid ions, which one exhibits diamagnetic behavior? (Atomic numbers: Ce = 58, Sm = 62, Eu = 63, Yb = 70)
• Which of these statements is accurate?

⚔️ Practice JEE Advanced Chemistry free + battle 1v1 →