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.
Show All Items. I've always had difficulty mixing paints to look like skin colors. However, I recently got advice from an art store employee and wanted to share my new knowledge. I mixed some lovely skin tones following this advice: The basic thing is to get Burnt Sienna and Titanium White and mix them together. The Sienna goes from brown to peachy! For more slight variations in color, you can mix in a tiny bit of Red Oxide and Yellow Ochre. Enjoy! And if you have any other tips for skin-tone painting, please leave them in the comments! Update: This mix of colors will give you a nice base coat. However, if you're going for a more complex and accurate set of skin tones, you'll need other colors too!