Molar Mass of CH3COOH (Acetic Acid)

Molar Mass Calculator

What is the molar mass of CH₃COOH?

Answer

M(CH₃COOH) =

60.052 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 ≈ 40.00%	≈ 40.00%
Hhydrogen	4	1.0080	4.0320 w ≈ 6.71%	≈ 6.71%
Ooxygen	2	15.999	31.998 w ≈ 53.28%	≈ 53.28%
Σ = 60.052 g/mol w = 100%				100%

Each fraction is rounded on its own, so the printed ones add up to 99.99%; unrounded, they make exactly 100%.

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

Mass fractions of the elements

O 53.28%C 40.00%

H 6.71%

Related Calculations

See Also

Liters to Kilograms - How many kilograms are in a liter of water, honey, gasoline, sand and other substances — by density
Grams to Kg - Convert Grams to Kilograms
Percentage Calculator: Fraction to Percent - What percentage one number is of another? Convert fraction into a percentage
Scientific Calculator with Memory & History - Free Engineering Calculator Online with Memory Function, Operation History, Logarithms & Trigonometry. Similar to ti-83, ti-84, ti-89

Recalculate with different values ↑

Molar masses of substances nearby

Formula	M, g/mol
Ni (nickel)	58.693
Co (cobalt)	58.933
C₃H₉N (isopropylamine)	59.112
CH₃COOH (acetic acid)	60.052
CH₄N₂O (urea)	60.056
COS (carbonyl sulfide)	60.07
SiO₂ (silicon dioxide)	60.083

FAQ

What is the molar mass of CH3COOH?

M(CH₃COOH) = 60.052 g/mol

How to calculate the molar mass of CH₃COOH?

Add up the atomic weights of all the atoms in the formula: 2 × 12.011 + 4 × 1.0080 + 2 × 15.999 = 60.052 g/mol.

How many grams are in 2 moles of CH₃COOH?

m = n × M = 2 mol × 60.052 g/mol = 120.104 g.

See Also