The molecular weight of Sodium hypochlorite (NaOCl) is 74.44186928.
Sodium hypochlorite (NaOCl) is an inorganic compound of three elements: Sodium, Oxygen, and Chlorine. The molecular weight of Sodium hypochlorite is 74.44186928 which can be calculated by adding up the total weight (atomic weight multiplied by their number) of Sodium, Oxygen, and Chlorine.
CALCULATION PROCEDURE: Sodium hypochlorite (NaOCl) Molecular Weight Calculation
Step 1: Find out the chemical formula and determine constituent atoms and their number in a Sodium hypochlorite molecule.
From the chemical formula, you will know different atoms and their number in a Sodium hypochlorite molecule. The chemical formula of Sodium hypochlorite is NaOCl. From the chemical formula, you can find that one molecule of Sodium hypochlorite has one Sodium (Na), Oxygen (O), and one Chlorine (Cl) atom.
Step 2: Find out atomic weights of each atom (from periodic table).
Atomic weight of Sodium (Na): 22.98976928 (Ref: Ciaaw-sodium)
Atomic weight of Oxygen (O): 15.9994 (Ref: Jlab-ele008)
Atomic weight of chlorine (Cl) : 35.4527 (Ref: Jlab-ele017)
Step 3: Calculate the total weight of each atom present in Sodium hypochlorite by multiplying its atomic weight by its number.
Number of Sodium atoms in Sodium hypochlorite: 1
Atomic weight of Sodium: 22.98976928
Total weight of Sodium atoms in Sodium hypochlorite: 22.98976928
Number of Oxygen atoms in Sodium hypochlorite: 1
Atomic weight of Oxygen: 15.9994
Total weight of Oxygen atoms in Sodium hypochlorite: 15.9994
Number of chlorine atoms in hydrogen hypochlorite: 1
Atomic weight of chlorine: 35.4527
Total weight of chlorine atoms in Sodium hypochlorite: 35.4527
Step 4: Calculate the molecular weight of Sodium hypochlorite by adding up the total weight of all atoms.
Molecular weight of Sodium hypochlorite (NaOCl): 22.98976928 (Sodium) + 15.9994 (Oxygen) + 35.4527 (chlorine) = 74.44186928
So the molecular weight of Sodium hypochlorite is 74.44186928.
Sodium hypochlorite (NaOCl) Molecular Weight Calculation
| Molecular weight of Sodium hypochlorite (NaOCl) | |||
| Constituent atoms | Number of each atom | Atomic weight | Total weight |
| Hydrogen (H) | 1 | 22.98976928 | 22.98976928 |
| Oxygen (O) | 1 | 15.9994 | 15.9994 |
| Chlorine (Cl) | 1 | 35.4527 | 35.4527 |
| Molecular weight of Sodium hypochlorite (NaOCl): | 74.44186928 | ||
REFERENCES:
- Ciaaw-sodium: https://www.ciaaw.org/sodium.htm
- Jlab-ele008: https://education.jlab.org/itselemental/ele008.html
- Jlab-ele017: https://education.jlab.org/itselemental/ele017.html
