The molecular weight of Picric acid (C₆H₃N₃O₇) is 229.10422.

Picric acid (C₆H₃N₃O₇) is an organic compound of four elements: Carbon, Hydrogen, Nitrogen, and Oxygen. The molecular weight of Picric acid is 229.10422 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of all its elements.

CALCULATION PROCEDURE: Picric acid  [C₆H₃N₃O₇] Molecular Weight Calculation

Step 1: Find the chemical formula and determine constituent atoms and their number in a Picric acid molecule.
You will know different atoms and their number in a Picric acid molecule from the chemical formula. The chemical formula of Picric acid is C₆H₃N₃O₇. From the chemical formula, you can find that one molecule of Picric acid consists of six Carbon (C) atoms, three Hydrogen (H) atoms, three Nitrogen (N) atoms, and seven Oxygen (O) atoms.

Step 2: Find out the atomic weights of each atom (from the periodic table).

Atomic weight of Carbon (C): 12.0107 (Ref: Jlab-ele006)
Atomic weight of Hydrogen (H): 1.008 (Ref: Lanl-1)
Atomic weight of Nitrogen (N): 14.00674 (Ref: Jlab-ele007)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)

Step 3: Calculate the total weight of each atom in a Picric acid molecule by multiplying its atomic weight by its number.

Number of Carbon atoms in Picric acid: 6
Atomic weight of Carbon (C): 12.0107
Total weight of Carbon atoms in Picric acid: 12.0107 x 6 = 72.0642

Number of Hydrogen atoms in Picric acid: 3
Atomic weight of Hydrogen (H): 1.008
Total weight of Hydrogen atoms in Picric acid: 1.008 x 3 = 3.024

Number of Nitrogen atoms in Picric acid: 3
Atomic weight of Nitrogen (N): 14.00674
Total weight of Nitrogen atoms in Picric acid: 14.00674 x 3 = 42.02022

Number of Oxygen atoms in Picric acid: 7
Atomic weight of Oxygen (O): 15.9994
Total weight of Oxygen atoms in Picric acid: 15.9994 x 7 = 111.9958

Step 4: Calculate the molecular weight of Picric acid by adding up the total weight of all atoms.

Molecular weight of Picric acid: 72.0642 (Carbon) + 3.024 (Hydrogen) + 42.02022 (Nitrogen) + 111.9958 (Oxygen) = 229.10422

Therefore, the molecular weight of Picric acid is 229.10422.

Picric acid [C₆H₃N₃O₇] Molecular Weight Calculation

REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml 
• Jlab-ele006: https://education.jlab.org/itselemental/ele006.html 
• Jlab-ele007: https://education.jlab.org/itselemental/ele007.html
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
• Pubchem-Chlorine: https://pubchem.ncbi.nlm.nih.gov/element/Chlorine

See also:

• Hydrogen chloride molecular weight calculation