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.
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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.