A mixture of potassium dichromate crystal and conc. H_(2)SO_(4) was added to each of the following four tubes. It was followed by strong heating. Identify the tubes in which the following changes will be observe. Support your answer with the help of chemical equations. (a) formation of violet vapours (b)formation of yellow precipitate (c) formation fo brown liquid(d) appearance of vinegar smell.

A mixture of potassium dichromate crystal and conc. H_(2)SO_(4) was ad

1.	A mixture of potassium dichromate crystal and conc. H_(2)SO_(4) was added to each of the following four tubes. It was followed by strong heating. Identify the tubes in which the following changes will be observe. Support your answer with the help of chemical equations. (a) formation of violet vapours (b)formation of yellow precipitate (c) formation fo brown liquid(d) appearance of vinegar smell.
Answer» SOLUTION :(a) Viloet vapour of `I_(2)` will appear in tube (i). (b) Yellow precipitate of sulphur will apppear in tube (ii). (c) BROWN liquid containing dissolved bromine will be noticed in tube (iv). (d) Vinegar SMELL due to acetic acid `(CH_(3)COOH)` will be notice in tube (III).