Molar Mass of Na3PO4 (Trisodium Phosphate)

Molar Mass Calculator

What is the molar mass of Na₃PO₄?

Answer

M(Na₃PO₄) =

163.940 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024).

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Nasodium	3	22.990	68.970 w ≈ 42.07%	≈ 42.07%
Pphosphorus	1	30.974	30.974 w ≈ 18.89%	≈ 18.89%
Ooxygen	4	15.999	63.996 w ≈ 39.04%	≈ 39.04%
Σ = 163.940 g/mol w = 100%				100%

Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

Mass fractions of the elements

Na 42.07%O 39.04%

P 18.89%

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Molar masses of substances nearby

Formula	M, g/mol
C₁₀H₁₄N₂ ((−)-nicotine)	162.236
C₆H₁₀OS₂ (allicin)	162.27
Dy (dysprosium)	162.50
Na₃PO₄ (trisodium phosphate)	163.940
Ca(NO₃)₂ (calcium nitrate)	164.086
Ho (holmium)	164.93
C₉H₁₁NO₂ (phenylalanine)	165.192

FAQ

What is the molar mass of Na3PO4?

M(Na₃PO₄) = 163.940 g/mol

How to calculate the molar mass of Na₃PO₄?

Add up the atomic weights of all the atoms in the formula: 3 × 22.990 + 30.974 + 4 × 15.999 = 163.940 g/mol.

How many grams are in 2 moles of Na₃PO₄?

m = n × M = 2 mol × 163.940 g/mol = 327.880 g.

See Also