Molar mass

Molar Mass of Hydrochloric Acid

The molar mass of hydrochloric acid (HCl) is 36.458 g/mol.

Hydrochloric Acid at a glance

PropertyValue
Molar mass36.458 g/mol
Molecular weight36.458 u
Chemical formulaHCl
Monoisotopic mass35.9766777 u
CAS number7647-01-0
PubChem CID313

How to calculate the molar mass of hydrochloric acid

1 × 1.008 + 1 × 35.45 = 36.458 g/mol

  1. Count the atoms in HCl: H 1, Cl 1.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 36.458 g/mol.

Elemental composition of hydrochloric acid

ElementAtomsAtomic weightMass (g/mol)Mass %
H Hydrogen11.0081.0082.7648%
Cl Chlorine135.4535.4597.235%

Grams and moles of hydrochloric acid

AmountEquals
1 g0.027429 mol
10 g0.27429 mol
100 g2.7429 mol
0.1 mol3.6458 g
1 mol36.458 g
1 g, in particles1.6518 × 10^22