Molar mass of sodium sulfite (Na2SO3)

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

Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Sodium	× 2	22.99	= 45.98
Sulfur	× 1	32.06	= 32.06
Oxygen	× 3	15.999	= 47.997
Total			126.037 g/mol

Percent composition by element

Sodium 36.48%
Sulfur 25.44%
Oxygen 38.08%

Try another formula

H₂O NaCl CO₂ C₆H₁₂O₆ H₂SO₄ Ca(OH)₂ CuSO₄·5H₂O C₈H₁₀N₄O₂

Could not read that formula

Related compounds

Na₂SO₄ Sodium sulfate Na₂S₂O₃ Sodium thiosulfate NaHSO₄ Sodium bisulfate Na₂S₂O₃·5H₂O Sodium thiosulfate pentahydrate Na₂SO₄·10H₂O Sodium sulfate decahydrate C₁₂H₂₅NaO₄S Sodium dodecyl sulfate

FAQ

What is the molar mass of Na2SO3?

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

How do you calculate the molar mass of Na2SO3?

Multiply the atomic mass of each element by the number of its atoms in Na2SO3, then add the results: 2 × 22.99 (Na) + 1 × 32.06 (S) + 3 × 15.999 (O) = 126.037 g/mol.

What percentage of Na2SO3 is Oxygen?

Oxygen makes up 38.08% of the mass of sodium sulfite (Na2SO3).