C2H5MgBr reacts with ethanal followed by acid work-up to form a substance D, which exists as a pair of optical isomers. D is heated with a solution of potassium dichromate in dilute sulphuric acid. What will be the colour of the solution remaining after this reaction?
Answer:
Substance D is butan-2-ol which when heated with potassium dichromate in dilute sulphuric acid gets oxidised to butan-2-one. During this reaction potassium dichromate will reduce to chromic sulphate which is green in colour. So the solution remaining after this reaction will be green in colour.
No comments:
Post a Comment