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.
The primary colors of red, yellow and blue mixed together produce gray. Mixing the secondary colors of orange, violet and green together will also produce gray. Two complementary colors directly across from one another on the color wheel make gray as well. Black can be mixed with any color to neutralize it, with the result being gray with the original color's undertones. Learn more about Colors.