Sodium Chloride (NaCl) Molecular Weight Calculation

The molecular weight of Sodium chloride (NaCl) is 58.44246928.

Sodium Chloride Molecular Weight CalculationTo calculate molecular weight of any compound, the first step is to know the constituent elements (atoms) and their number in that particular compound. Then calculate the total atomic weight of each element by multiplying its atomic weight by its number. The sum of total atomic weight of all constituent elements will be the molecular weight of the compound. Note that the value of atomic weight may differ from different sources.

CALCULATION PROCEDURE

Step 1: Find out the chemical formula and determine constituent atoms and their number in a Sodium chloride molecule. 
From the chemical formula, you will know different atoms and their number in a Sodium chloride molecule. Chemical formula of Sodium chloride is NaCl. From the chemical formula, it is easy to find out that there are one Sodium (Na) atom and one chlorine (Cl) atom in a molecule of Sodium chloride.

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 chlorine (Cl) : 35.4527 (Ref: Jlab-ele017)

Step 3: Calculate the total weight of each atom present in Sodium chloride by multiplying its atomic weight by its number. 

Number of Sodium atoms in Sodium chloride: 1
Atomic weight of Sodium: 22.98976928
Total weight of Sodium atoms in Sodium chloride: 22.98976928

Number of chlorine atoms in hydrogen chloride: 1
Atomic weight of chlorine: 35.4527
Total weight of chlorine atoms in Sodium chloride: 35.4527

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

Molecular weight of Sodium chloride (NaCl): 

22.98976928 (Sodium) + 35.4527 (chlorine)

So the molecular weight of Sodium chloride is 58.44246928.

Molecular weight of Sodium Chloride (NaCl)
Atoms (elements) in Sodium chloride
Number of each atom in Sodium chloride
Atomic weight of each atomTotal weight of each atom in Sodium chloride
H (Hydrogen)122.9897692822.98976928 (22.98976928 x 1)
Cl (Chlorine)135.452735.4527 (35.4527 x 1)
Molecular weight of NaCl:
58.44246928

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