Molar Mass of CH3COONa (Sodium Acetate)

Molar Mass Calculator

What is the molar mass of CH₃COONa?

Answer

M(CH₃COONa) =

82.034 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
Ccarbon	2	12.011	24.022 w ≈ 29.28%	≈ 29.28%
Hhydrogen	3	1.0080	3.0240 w ≈ 3.69%	≈ 3.69%
Ooxygen	2	15.999	31.998 w ≈ 39.01%	≈ 39.01%
Nasodium	1	22.990	22.990 w ≈ 28.02%	≈ 28.02%
Σ = 82.034 g/mol w = 100%				100%

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

Mass fractions of the elements

O 39.01%

C 29.28%Na 28.02%H 3.69%

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Molar masses of substances nearby

Formula	M, g/mol
H₂Se (hydrogen selenide)	80.987
ZnO (zinc oxide)	81.38
H₃PO₃ (phosphonic acid)	81.995
CH₃COONa (sodium acetate)	82.034
H₂SO₃ (sulfurous acid)	82.07
C₆H₁₀ (cyclohexene)	82.146
Kr (krypton)	83.798

FAQ

What is the molar mass of CH3COONa?

M(CH₃COONa) = 82.034 g/mol

How to calculate the molar mass of CH₃COONa?

Add up the atomic weights of all the atoms in the formula: 2 × 12.011 + 3 × 1.0080 + 2 × 15.999 + 22.990 = 82.034 g/mol.

How many grams are in 2 moles of CH₃COONa?

m = n × M = 2 mol × 82.034 g/mol = 164.068 g.

See Also