Molar Mass of ZnSO4 (Zinc Sulfate)

Molar Mass Calculator

What is the molar mass of ZnSO₄?

Answer

M(ZnSO₄) ≈

161.44 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Zn: 65.38, S: 32.06.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Znzinc	1	65.38	65.38 w ≈ 40.50%	≈ 40.50%
Ssulfur	1	32.06	32.06 w ≈ 19.86%	≈ 19.86%
Ooxygen	4	15.999	63.996 w ≈ 39.64%	≈ 39.64%
Σ = 161.436 ≈ 161.44 g/mol w = 100%				100%

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

Mass fractions of the elements

Zn 40.50%O 39.64%

S 19.86%

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Molar masses of substances nearby

Formula	M, g/mol
Fe₂O₃ (iron(III) oxide)	159.687
Br₂ (bromine)	159.808
KC₆H₅CO₂ (potassium benzoate)	160.213
ZnSO₄ (zinc sulfate)	161.44
Na₂CrO₄ (sodium chromate)	161.972
Ca(HCO₃)₂ (calcium bicarbonate)	162.110
FeCl₃ (ferric chloride)	162.20

FAQ

What is the molar mass of ZnSO4?

M(ZnSO₄) ≈ 161.44 g/mol

How to calculate the molar mass of ZnSO₄?

Add up the atomic weights of all the atoms in the formula: 65.38 + 32.06 + 4 × 15.999 = 161.436 ≈ 161.44 g/mol.

How many grams are in 2 moles of ZnSO₄?

m = n × M = 2 mol × 161.44 g/mol = 322.88 g.

See Also