Molar Mass of CuCl2 (Cupric Chloride)

Molar Mass Calculator

What is the molar mass of CuCl₂?

Answer

M(CuCl₂) ≈

134.45 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
Cucopper	1	63.546	63.546 w ≈ 47.27%	≈ 47.27%
Clchlorine	2	35.45	70.90 w ≈ 52.73%	≈ 52.73%
Σ = 134.446 ≈ 134.45 g/mol w = 100%				100%

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

Mass fractions of the elements

Cl 52.73%Cu 47.27%

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Molar masses of substances nearby

Formula	M, g/mol
LiI (lithium iodide)	133.84
Na₂C₂O₄	133.998
C₄H₆O₅ (DL-malic acid)	134.087
CuCl₂ (cupric chloride)	134.45
SnO (tin(II) oxide)	134.71
C₈H₉NO (acetanilide)	135.166
CaHPO₄ (dicalcium phosphate)	136.056

FAQ

What is the molar mass of CuCl2?

M(CuCl₂) ≈ 134.45 g/mol

How to calculate the molar mass of CuCl₂?

Add up the atomic weights of all the atoms in the formula: 63.546 + 2 × 35.45 = 134.446 ≈ 134.45 g/mol.

How many grams are in 2 moles of CuCl₂?

m = n × M = 2 mol × 134.45 g/mol = 268.90 g.

See Also