# Sodium Acetate [CH3COONa] Molecular Weight Calculation

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

Sodium acetate (CH3COONa) is an organic compound of four elements: Carbon, Hydrogen, Sodium, and Oxygen. 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, Sodium, and Oxygen. To calculate molecular weight of any compound, the first step is to know the constituent atoms and their number in that particular compound. Then calculate the total weight of each atom by multiplying its atomic weight by its number. The sum of total weight of all constituent atoms will be the molecular weight of the compound. Note that the value of atomic weight may differ slightly from different sources.

# 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.
From the chemical formula, you will know different atoms and their number in a Sodium acetate molecule. Chemical formula of Sodium acetate is C2H3O2Na1. From the chemical formula of Sodium acetate, 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 atomic weights of each atom (from 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 present 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 