Question

If we treat a solution of Sodium dichromate with KCl, the orange crystals that crystallize out is:

• A. Sodium Chloride
• B. Sodium oxide
• C. Sodium chromate
• D. Potassium Dichromate

Answer 1

The correct option is D Potassium Dichromate

The reaction that we are looking for is:
$N{a}_{2}C{r}_2{O}_7+2KCl\to K_{2}C{r}_2{O}_7+2NaCl$
The orange crystals thus obtained is Potassium Dichromate. It is a very important chemical compound that finds extensive use as an oxidant. For instance, it is used to oxidize alcohols in organic chemistry.