Multiple choice Aqueous solution of ________ is colourless. [Cr(NH3)6]3+ [CoCl4]2– [Cr(OH)6]3– [Al(H2O)6]3+ [Fe(H2O)6]2+ Reveal answer Fill a bubble to check yourself D Correct answer Explanation [Al(H2O)6]3+(aq) is a colourless solution.