Molar Mass of Hydrochloric acid
HCl — 36.458 g/mol, worked out element by element.
Molar mass of Hydrochloric acid, HCl
36.458 g/mol
Molecular weight 36.458 · 2 atoms per formula unit
Also known as: hcl, muriatic acid, hydrogen chloride.
The strong monoprotic acid of every titration example, and the acid in gastric juice.
How 36.458 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Chlorine | 1 | 35.45 | 35.450 | 97.24% |
| Hydrogen | 1 | 1.008 | 1.008 | 2.76% |
| Total | 2 | 36.458 | 100% |
M = 1 × 35.450 + 1 × 1.008 = 36.458 g/mol
Grams to moles for Hydrochloric acid
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0274 mol | 1.652 × 10^22 |
| 10 g | 0.2743 mol | 1.652 × 10^23 |
| 25 g | 0.6857 mol | 4.130 × 10^23 |
| 50 g | 1.3714 mol | 8.259 × 10^23 |
| 100 g | 2.7429 mol | 1.652 × 10^24 |
| 250 g | 6.8572 mol | 4.130 × 10^24 |
| 36.458 g | 1 mol | 6.022 × 10^23 |
For any other amount, use the molar mass calculator, or the molarity calculator to make up a solution of a given concentration.
Related compounds
Can't find the exact calculator you need?
Describe it in one sentence — get a working, math-verified calculator in seconds. Free, no signup.
Build your own calculatorRelated Calculators
Frequently Asked Questions
What is the molar mass of Hydrochloric acid?
The molar mass of Hydrochloric acid (HCl) is 36.458 g/mol. That is the sum of the standard atomic weights of all 2 atoms in one formula unit: 1 × 35.450 + 1 × 1.008 = 36.458.
What is the molecular weight of Hydrochloric acid?
36.458 — the same number as the molar mass, but as a dimensionless ratio rather than in g/mol. The two terms describe the same arithmetic, so a molecular weight of 36.46 and a molar mass of 36.46 g/mol are the same answer.
How many moles are in 100 g of Hydrochloric acid?
100 ÷ 36.458 = 2.7429 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Hydrochloric acid?
By mass, Hydrochloric acid is 97.24% chlorine, 2.76% hydrogen. Each element's share is its total mass in the formula divided by 36.458.
How many atoms are in one formula unit of Hydrochloric acid?
2: 1 chlorine, 1 hydrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Hydrochloric acid contains 2 × 6.022 × 10²³ atoms in total.