Molar Mass of CuSO4 (Cupric Sulfate)

Molar Mass Calculator

What is the molar mass of CuSO₄?

Answer

M(CuSO₄) ≈

159.60 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
Cucopper	1	63.546	63.546 w ≈ 39.82%	≈ 39.82%
Ssulfur	1	32.06	32.06 w ≈ 20.09%	≈ 20.09%
Ooxygen	4	15.999	63.996 w ≈ 40.10%	≈ 40.10%
Σ = 159.602 ≈ 159.60 g/mol w = 100%				100%

Each fraction is rounded on its own, so the printed ones add up to 100.01%; unrounded, they make exactly 100%.

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

Mass fractions of the elements

O 40.10%Cu 39.82%

S 20.09%

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Molar masses of substances nearby

Formula	M, g/mol
CrCl₃ (chromic chloride)	158.35
SrCl₂ (strontium chloride)	158.52
Tb (terbium)	158.93
CuSO₄ (cupric sulfate)	159.60
Fe₂O₃ (iron(III) oxide)	159.687
Br₂ (bromine)	159.808
KC₆H₅CO₂ (potassium benzoate)	160.213

FAQ

What is the molar mass of CuSO4?

M(CuSO₄) ≈ 159.60 g/mol

How to calculate the molar mass of CuSO₄?

Add up the atomic weights of all the atoms in the formula: 63.546 + 32.06 + 4 × 15.999 = 159.602 ≈ 159.60 g/mol.

How many grams are in 2 moles of CuSO₄?

m = n × M = 2 mol × 159.60 g/mol = 319.20 g.

See Also