Molar mass of hydrochloric acid
36.46 g/molHCl
Molar mass
Molar mass. The mass of one mole in grams: add the atomic mass of every atom in the formula. Masses. Standard atomic masses to two decimals, hydrogen 1.008, every element to uranium. Typing. Ca(OH)2, (NH4)2SO4, CuSO4.5H2O and K4[Fe(CN)6] all work.
36.46g/mol
HCl
- H× 12.76%
- Cl× 197.24%
- H1 × 1.0081.008
- Cl1 × 35.4535.45
- Total36.46 g/mol
Grams, moles, particles
Type any one. The other three fill in. Moles. From grams, particles or litres they are rounded to 3 significant figures first, as in a worked answer. 1 mol = 6.022 × 10²³ particles = 22.7 L of gas at STP (1 bar); 22.4 L at 1 atm.
1 mol of HCl = 6.022 × 10²³ molecules
At 1 atm (older value): 22.40 L
Add up the atoms
- Hydrogen: 1 × 1.008 = 1.008 g
- Chlorine: 1 × 35.45 = 35.45 g
- Molar mass = 1.008 + 35.45 = 36.46 g/mol
Share of the mass
- Hydrogen2.76%
- Chlorine97.24%
1 mol of HCl = 36.46 g
1 g of HCl = 0.02743 mol
Molar mass of hydrochloric acid: quick answers
What is the molar mass of hydrochloric acid?
The molar mass of hydrochloric acid, HCl, is 36.46 g/mol. So 1 mol of hydrochloric acid has a mass of 36.46 g.
How do you calculate the molar mass of HCl?
Add the atomic masses of all the atoms: 1.008 + 35.45 = 36.46 g/mol.
What is the percentage of chlorine in hydrochloric acid?
Chlorine is 97.24% of the mass of HCl: 35.45 g in every 36.46 g. In full: H 2.76%, Cl 97.24%.