Question

1) Hypothesize your answer for the questions above and briefly explain your reasoning.

a) Can we predict the colour of a solution of salt based on the identity of the salt’s metal ion?

b) Can we predict the colour of a solution of salt based on the solutions absorption of visible light?

Answer 1

a) Each type of metal ion of the salt has a characterstic color, for example lead salts have this
grey to white color, copper salts have blue/green color. So, yes we can predict the color of a
solution of salt based on the identity of the salt's metal ion.

b) We know that in the electromagnetic spectrum of visible light each color has its own characterstic
  wavelength and that certain color is displayed when that particular wavelength of light is absorbed.
So, we can predict the colour of a solution of salt based on the solutions absorption of visible light.