Molar mass of sodium thiosulfate (Na2S2O3)

The molar mass of sodium thiosulfate (Na2S2O3) is 158.097 g/mol.

Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Sodium	× 2	22.99	= 45.98
Sulfur	× 2	32.06	= 64.12
Oxygen	× 3	15.999	= 47.997
Total			158.097 g/mol

Percent composition by element

Sodium 29.08%
Sulfur 40.56%
Oxygen 30.36%

Try another formula

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

Could not read that formula

Related compounds

Na₂SO₄ Sodium sulfate NaHSO₄ Sodium bisulfate Na₂SO₃ Sodium sulfite Na₂S₂O₃·5H₂O Sodium thiosulfate pentahydrate Na₂SO₄·10H₂O Sodium sulfate decahydrate C₁₂H₂₅NaO₄S Sodium dodecyl sulfate

FAQ

What is the molar mass of Na2S2O3?

The molar mass of sodium thiosulfate (Na2S2O3) is 158.097 g/mol.

How do you calculate the molar mass of Na2S2O3?

Multiply the atomic mass of each element by the number of its atoms in Na2S2O3, then add the results: 2 × 22.99 (Na) + 2 × 32.06 (S) + 3 × 15.999 (O) = 158.097 g/mol.

What percentage of Na2S2O3 is Sulfur?

Sulfur makes up 40.56% of the mass of sodium thiosulfate (Na2S2O3).