# What is the color of Cu^(2+) in solution? What is the color of glucose in solution? What the color and formula are of copper (l) oxide?

Jan 26, 2017

The $\text{cupric ion}$ has a truly beautiful blue colour in aqueous solution.....
${\left[C u {\left(O {H}_{2}\right)}_{6}\right]}^{2 +}$ gives a blue coloured solution in water:
Very large, macroscopic cyrstals of $\left[C u {\left(O {H}_{2}\right)}_{6}\right] S {O}_{4}$ can be grown from these solutions:
And when glucose is dissolved in water, a colourless solution results. On the other hand, $\text{cuprous oxide}$, i.e. $C {u}_{2} O$, is a brick-red powder, that is insoluble in water.