Molar mass of disodium phosphate (Na2HPO4)

The molar mass of disodium phosphate (Na2HPO4) is 141.958 g/mol.

disodium hydrogen phosphate

Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Sodium	× 2	22.99	= 45.98
Hydrogen	× 1	1.008	= 1.008
Phosphorus	× 1	30.974	= 30.974
Oxygen	× 4	15.999	= 63.996
Total			141.958 g/mol

Percent composition by element

Sodium 32.39%
Hydrogen 0.71%
Phosphorus 21.82%
Oxygen 45.08%

Try another formula

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

Could not read that formula

Related compounds

NaH₂PO₄ Monosodium phosphate NaOH Sodium hydroxide NaHCO₃ Sodium bicarbonate H₃PO₄ Phosphoric acid CH₃COONa Sodium acetate Na₃PO₄ Sodium phosphate

FAQ

What is the molar mass of Na2HPO4?

The molar mass of disodium phosphate (Na2HPO4) is 141.958 g/mol.

How do you calculate the molar mass of Na2HPO4?

Multiply the atomic mass of each element by the number of its atoms in Na2HPO4, then add the results: 2 × 22.99 (Na) + 1 × 1.008 (H) + 1 × 30.974 (P) + 4 × 15.999 (O) = 141.958 g/mol.

What percentage of Na2HPO4 is Oxygen?

Oxygen makes up 45.08% of the mass of disodium phosphate (Na2HPO4).