Molar Mass of Aluminium chloride
AlCl3 — 133.332 g/mol, worked out element by element.
Molar mass of Aluminium chloride, AlCl₃
133.332 g/mol
Molecular weight 133.332 · 4 atoms per formula unit
Also known as: alcl3, aluminum chloride.
A Lewis acid catalyst; it sublimes rather than melting at ordinary pressure.
How 133.332 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Chlorine | 3 | 35.45 | 106.350 | 79.76% |
| Aluminum | 1 | 26.982 | 26.982 | 20.24% |
| Total | 4 | 133.332 | 100% |
M = 3 × 35.450 + 1 × 26.982 = 133.332 g/mol
Grams to moles for Aluminium chloride
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0075 mol | 4.517 × 10^21 |
| 10 g | 0.0750 mol | 4.517 × 10^22 |
| 25 g | 0.1875 mol | 1.129 × 10^23 |
| 50 g | 0.3750 mol | 2.258 × 10^23 |
| 100 g | 0.7500 mol | 4.517 × 10^23 |
| 250 g | 1.8750 mol | 1.129 × 10^24 |
| 133.332 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 Aluminium chloride?
The molar mass of Aluminium chloride (AlCl3) is 133.332 g/mol. That is the sum of the standard atomic weights of all 4 atoms in one formula unit: 3 × 35.450 + 1 × 26.982 = 133.332.
What is the molecular weight of Aluminium chloride?
133.332 — 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 133.33 and a molar mass of 133.33 g/mol are the same answer.
How many moles are in 100 g of Aluminium chloride?
100 ÷ 133.332 = 0.7500 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Aluminium chloride?
By mass, Aluminium chloride is 79.76% chlorine, 20.24% aluminum. Each element's share is its total mass in the formula divided by 133.332.
How many atoms are in one formula unit of Aluminium chloride?
4: 3 chlorine, 1 aluminum. One mole contains 6.02214076 × 10²³ formula units, so a mole of Aluminium chloride contains 4 × 6.022 × 10²³ atoms in total.