Molar Mass of CrCl3 (Chromic Chloride)

Molar Mass Calculator

What is the molar mass of CrCl₃?

Answer

M(CrCl₃) ≈

158.35 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Cl: 35.45.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Crchromium	1	51.996	51.996 w ≈ 32.84%	≈ 32.84%
Clchlorine	3	35.45	106.35 w ≈ 67.16%	≈ 67.16%
Σ = 158.346 ≈ 158.35 g/mol w = 100%				100%

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

Mass fractions of the elements

Cl 67.16%

Cr 32.84%

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Molar masses of substances nearby

Formula	M, g/mol
Na₂S₂O₃ (sodium thiosulfate)	158.10
(CH₃COO)₂Ca (calcium acetate)	158.166
K₂SO₃ (potassium sulfite)	158.25
CrCl₃ (chromic chloride)	158.35
SrCl₂ (strontium chloride)	158.52
Tb (terbium)	158.93
CuSO₄ (cupric sulfate)	159.60

FAQ

What is the molar mass of CrCl3?

M(CrCl₃) ≈ 158.35 g/mol

How to calculate the molar mass of CrCl₃?

Add up the atomic weights of all the atoms in the formula: 51.996 + 3 × 35.45 = 158.346 ≈ 158.35 g/mol.

How many grams are in 2 moles of CrCl₃?

m = n × M = 2 mol × 158.35 g/mol = 316.70 g.

See Also