The molecular weight of Sodium acetate [CH₃COONa] is 82.03396928.

Sodium acetate (CH₃COONa) is an organic compound of four elements: Carbon, Hydrogen, Oxygen, and Sodium. The molecular weight of Sodium acetate is 82.03396928 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Carbon, Hydrogen, Oxygen, and Sodium.

CALCULATION PROCEDURE: Sodium acetate [CH₃COONa] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Sodium acetate molecule.
You will know different atoms and their number in a Sodium acetate molecule from the chemical formula. The chemical formula of Sodium acetate is C₂H₃O₂Na. From the chemical formula, you can find that one molecule of Sodium acetate has two Carbon (C) atoms, three Hydrogen (H) atoms, two Oxygen (O) atoms, and one Sodium (Na) atom.

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 Oxygen (O): 15.9994 (Ref: Jlab-ele008)
Atomic weight of Sodium (Na): 22.98976928 (Ref: Ciaaw-sodium)

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

Number of Carbon atoms in Sodium acetate: 2
Atomic weight of Carbon (C): 12.0107
Total weight of Carbon atoms in Sodium acetate: 12.0107 x 2 = 24.0214

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

Number of Oxygen atoms in Sodium acetate: 2
Atomic weight of Oxygen (O): 15.9994
Total weight of Oxygen atoms in Sodium acetate: 15.9994 x 2 = 31.9988

Number of Sodium atoms in Sodium acetate: 1
Atomic weight of Sodium (Na): 22.98976928
Total weight of Sodium atoms in Sodium acetate: 22.98976928 x 1 = 22.98976928

Step 4: Calculate the molecular weight of Sodium acetate by adding up the total weight of all atoms.

Molecular weight of Sodium acetate: 24.0214 (Carbon) + 3.024 (Hydrogen) + 31.9988 (Oxygen) + 22.98976928 (Sodium) = 82.03396928

So the molecular weight of Sodium acetate is 82.03396928.

Sodium acetate [CH₃COONa] Molecular Weight Calculation

REFERENCES:

• Lanl-1: https://periodic.lanl.gov/1.shtml 
• Jlab-ele006; https://education.jlab.org/itselemental/ele006.html
• Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
• Ciaaw-sodium : https://www.ciaaw.org/sodium.htm

See also:

• Apiose (C5H10O5) Molecular Weight Calculation