Question

Mn2+ Co2+ Cu2+ Fe3+ Ni2+

Chromatography. Suppose you dropped two drops of .1 Mol solutions of the above ions onto filter paper, separately onto 5 spaces, making sure they do not touch. Suppose then you then developed this filter in a 10mL eluting solution. The eluting solution is comprised of 9mL acetone and 1mL of hcl. What colors would be seen for each of the 5 ions?

Answer 1

Mn²⁺ appears pale pink (very light pink) in color.

Co²⁺ appears light red in color.

Cu²⁺ appears blue in color.

Fe³⁺ appears reddish in color.

Ni²⁺ appears green in color.