Question

Which aqueous solution is colored?

O KCl(aq)
O BaCl(aq)
O MgCl (aq)
O CoCl(aq)

Answer 1

CoCl

Step-by-step explanation:

Ions of IA, IIA are colourless, also Cl- colourless too.

CoCl2 is blue when without water, and is pink when is with water.