# Potassium Acetate [CH3COOK] Molecular Weight Calculation

The molecular weight of Potassium acetate [CH3COOK] is 98.1425.

Potassium acetate (CH3COOK) is an organic compound of four elements: Carbon, Hydrogen, Potassium, and Oxygen. The molecular weight of Potassium acetate is 98.1425 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Carbon, Hydrogen, Potassium, 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: Potassium acetate [CH3COOK] Molecular Weight Calculation

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Potassium acetate molecule.
From the chemical formula, you will know different atoms and their number in a Potassium acetate molecule. Chemical formula of Potassium acetate is C2H3O2K1. From the chemical formula of Potassium acetate, you can find that one molecule of Potassium acetate has two Carbon (C) atoms, three Hydrogen (H) atoms, two Oxygen (O) atoms and one Potassium (K) 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 Potassium (K): 39.0983 (Ref: Ciaaw-potassium)

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

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

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

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

Number of Potassium atoms in Potassium acetate: 1
Atomic weight of Potassium (K): 39.0983
Total weight of Potassium atoms in Potassium acetate: 39.0983 x 1 = 39.0983

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

Molecular weight of Potassium acetate: 24.0214 (Carbon) + 3.024 (Hydrogen) + 31.9988 (Oxygen) + 39.0983 (Potassium) = 98.1425

So the molecular weight of Potassium acetate is 98.1425.

Potassium acetate [CH3COOK] 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-potassium : https://www.ciaaw.org/potassium.htm 