The molecular formula of citric acid is C 6 H 8 O 7. The chemical formula for citric acid is best shown by a diagram of its complete structural formula. This shows how the atoms are arranged in the molecule. Citric acid has three carboxyl or-COOH groups and is triprotic in nature.
In order to make tan you should mix white and brown. If you want to make the brown color yourself mix 2 parts of one primary color (like red) and 1 part of each of the other t â¦ wo (blue and yellow). The more white you use the lighter the shade of tan.
red+white= pink white+black=gray two complementary colors (ex. green and red, purple and yellow, and blue and orange)= brown. I hope this helps you but if you have any other things that you want to know they are in these websites listed below: Source(s): http://www.colormatters.com/colortheory....