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.
When you mix any two complementary colors (opposites), such as green and red, yellow and violet, orange and blue, they cancel each other out, i.e. turn muddy-brown. Add white to that brown and you will get gray. Written Sep 15, 2015 Â· View Upvotes.