Molar Mass of H2SO4 (Sulfuric Acid)

Molar Mass Calculator

What is the molar mass of H₂SO₄?

Answer

M(H₂SO₄) ≈

98.07 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — S: 32.06.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Hhydrogen	2	1.0080	2.0160 w ≈ 2.06%	≈ 2.06%
Ssulfur	1	32.06	32.06 w ≈ 32.69%	≈ 32.69%
Ooxygen	4	15.999	63.996 w ≈ 65.25%	≈ 65.25%
Σ = 98.072 ≈ 98.07 g/mol w = 100%				100%

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

Mass fractions of the elements

O 65.25%

S 32.69%H 2.06%

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Molar masses of substances nearby

Formula	M, g/mol
NH₄Br (ammonium bromide)	97.943
H₃PO₄ (phosphoric acid)	97.994
C₄H₂O₃ (maleic anhydride)	98.057
H₂SO₄ (sulfuric acid)	98.07
CH₃COOK (potassium acetate)	98.142
C₆H₁₀O (cyclohexanone)	98.145
COCl₂ (phosgene)	98.91

FAQ

What is the molar mass of H2SO4?

M(H₂SO₄) ≈ 98.07 g/mol

How to calculate the molar mass of H₂SO₄?

Add up the atomic weights of all the atoms in the formula: 2 × 1.0080 + 32.06 + 4 × 15.999 = 98.072 ≈ 98.07 g/mol.

How many grams are in 2 moles of H₂SO₄?

m = n × M = 2 mol × 98.07 g/mol = 196.14 g.

See Also