Molar Mass of Na2SO3 (Sodium Sulfite)
Molar Mass Calculator
What is the molar mass of Na2SO3?
Answer
M(Na2SO3) ≈
126.04 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — S: 32.06.
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Nasodium | 2 | 22.990 | 45.980 w ≈ 36.48% | ≈ 36.48% |
| Ssulfur | 1 | 32.06 | 32.06 w ≈ 25.44% | ≈ 25.44% |
| Ooxygen | 3 | 15.999 | 47.997 w ≈ 38.08% | ≈ 38.08% |
| Σ = 126.037 ≈ 126.04 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
O 38.08%Na 36.48%
S 25.44%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| ZnCO₃ (zinc carbonate) | 125.39 |
| SrF₂ (strontium fluoride) | 125.62 |
| MnCl₂ (manganese(II) chloride) | 125.84 |
| Na₂SO₃ (sodium sulfite) | 126.04 |
| C₂H₆O₆ | 126.064 |
| C₅H₆N₂O₂ (thymine) | 126.115 |
| FeCl₂ (ferrous chloride) | 126.75 |