What is the color of Cu2+ in solution? What is the color of glucose in solution? What the color and formula are of copper (l) oxide?

1 Answer
Jan 26, 2017

The cupric ion has a truly beautiful blue colour in aqueous solution.....

Explanation:

[Cu(OH2)6]2+ gives a blue coloured solution in water:

![https://tse4.mm.bing.net/th?id=OIP.6dvoTueAL8mcvamyGL0e-QDIEM&pid=15.1&P=0&w=300&h=300](useruploads.socratic.org)

Very large, macroscopic cyrstals of [Cu(OH2)6]SO4 can be grown from these solutions:

![https://tse1.mm.bing.net/th?id=OIP.-ayXreQ2xvtq72IqKrD3TwEsD1&pid=15.1&P=0&w=204&h=168](useruploads.socratic.org)

And when glucose is dissolved in water, a colourless solution results. On the other hand, cuprous oxide, i.e. Cu2O, is a brick-red powder, that is insoluble in water.

![https://tse2.mm.bing.net/th?id=OIP.UwdDbLppcRpvtXXwPBxqWAD6D6&pid=15.1&P=0&w=300&h=300](useruploads.socratic.org)