NaCl (Sodium Chloride) Molar Mass

NaCl (Sodium Chloride) Molar Mass

Find the Molar Mass of Sodium Chloride, NaCl Step-by-Step

There are 4 easy steps to find the molar mass of NaCl based on its chemical formula.

1. Count The Number of Each Atom

The first step to finding the molar mass of Sodium Chloride is to count the number of each atom present in a single molecule using the chemical formula, NaCl:
ElementNumber of Atoms
Na (Sodium)1
Cl (Chlorine)1

2. Find Atomic Mass of Each Element

Next, using the periodic table, find the atomic mass in g/mol of each element (the molar mass of an element is equal to its atomic mass):
Molar Mass (g/mol)
Na (Sodium)22.98976928
Cl (Chlorine)35.453

3. Compute Mass of Each Element

Multiply the number of atoms by the atomic weight of each element found in steps 1 and 2 to get the mass of each element in NaCl:
Molar Mass (g/mol)
Na (Sodium)1 × 22.98976928 = 22.98976928
Cl (Chlorine)1 × 35.453 = 35.453

4. Sum Each Element's Mass

Finally, add together the total mass of each element to get the molar mass of NaCl:
22.98976928 g/mol + 35.453 g/mol = 58.44276928 g/mol

5. Find Mole Fraction

To find the mole fraction and percentage of each element in NaCl, divide each total from step 3 by the total molar mass found in step 4:
Mole FractionPercent
Na (Sodium)22.98976928 ÷ 58.44276928 = 0.393372× 100 = 39.3372%
Cl (Chlorine)35.453 ÷ 58.44276928 = 0.606628× 100 = 60.6628%

Molecular Weight of NaCl

58.4428 g/mol

The molar mass and molecular weight of NaCl is 58.443.
Edit Elemental Percent Composition

Convert NaCl From Moles to Grams

Moles mol

Convert NaCl From Grams to Moles and Molecules

Weight g

Composition of Sodium Chloride - NaCl

Element Symbol Atomic Mass # of Atoms Mass Percent
Sodium Na 22.9898 g/mol 1 39.3372%
Chlorine Cl 35.453 g/mol 1 60.6628%
Sodium Chloride Element Mass PercentChlorine35.453gChlorine35.453gSodium22.9898gSodium22.9898g NaCl # of AtomsSodium1Sodium1Chlorine1Chlorine1

Instructions

This program determines the molecular mass of a substance. Enter the molecular formula of the substance. It will calculate the total mass along with the elemental composition and mass of each element in the compound.

  • Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.
  • You can use parenthesis () or brackets [].

Examples

Finding Molar Mass

Read our article on how to calculate molar mass.

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