Molar mass

Molar Mass of Sodium Sulfite

The molar mass of sodium sulfite (Na2SO3) is 126.037 g/mol.

Sodium Sulfite at a glance

PropertyValue
Molar mass126.037 g/mol
Molecular weight126.037 u
Chemical formulaNa2SO3
Monoisotopic mass125.936354 u
CAS number7757-83-7
PubChem CID24437

How to calculate the molar mass of sodium sulfite

2 × 22.99 + 1 × 32.06 + 3 × 15.999 = 126.037 g/mol

  1. Count the atoms in Na2SO3: Na 2, S 1, O 3.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 126.037 g/mol.

Elemental composition of sodium sulfite

ElementAtomsAtomic weightMass (g/mol)Mass %
Na Sodium222.9945.9836.481%
S Sulfur132.0632.0625.437%
O Oxygen315.99947.99738.082%

Grams and moles of sodium sulfite

AmountEquals
1 g0.0079342 mol
10 g0.079342 mol
100 g0.79342 mol
0.1 mol12.604 g
1 mol126.04 g
1 g, in particles4.7781 × 10^21