Molar Mass of C2H5OH (Ethanol)

Molar Mass Calculator

What is the molar mass of C₂H₅OH?

Answer

M(C₂H₅OH) =

46.069 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 ≈ 52.14%	≈ 52.14%
Hhydrogen	6	1.0080	6.0480 w ≈ 13.13%	≈ 13.13%
Ooxygen	1	15.999	15.999 w ≈ 34.73%	≈ 34.73%
Σ = 46.069 g/mol w = 100%				100%

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

Mass fractions of the elements

C 52.14%

O 34.73%H 13.13%

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Molar masses of substances nearby

Formula	M, g/mol
C₂H₇N (ethylamine)	45.085
NO₂ (nitrogen dioxide)	46.005
HCOOH (formic acid)	46.025
C₂H₅OH (ethanol)	46.069
CH₆N₂ (monomethylhydrazine)	46.073
HNO₂ (nitrous acid)	47.013
Ti (titanium)	47.867

FAQ

What is the molar mass of C2H5OH?

M(C₂H₅OH) = 46.069 g/mol

How to calculate the molar mass of C₂H₅OH?

Add up the atomic weights of all the atoms in the formula: 2 × 12.011 + 6 × 1.0080 + 15.999 = 46.069 g/mol.

How many grams are in 2 moles of C₂H₅OH?

m = n × M = 2 mol × 46.069 g/mol = 92.138 g.

See Also