Molar Mass of Acetic acid
CH3COOH — 60.052 g/mol, worked out element by element.
Molar mass of Acetic acid, CH₃COOH
60.052 g/mol
Molecular weight 60.052 · 8 atoms per formula unit
Also known as: ch3cooh, ethanoic acid, vinegar, c2h4o2.
The weak acid of vinegar, and the one whose pKa of 4.76 appears in nearly every buffer question.
How 60.052 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 2 | 15.999 | 31.998 | 53.28% |
| Carbon | 2 | 12.011 | 24.022 | 40.00% |
| Hydrogen | 4 | 1.008 | 4.032 | 6.71% |
| Total | 8 | 60.052 | 100% |
M = 2 × 15.999 + 2 × 12.011 + 4 × 1.008 = 60.052 g/mol
Grams to moles for Acetic acid
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0167 mol | 1.003 × 10^22 |
| 10 g | 0.1665 mol | 1.003 × 10^23 |
| 25 g | 0.4163 mol | 2.507 × 10^23 |
| 50 g | 0.8326 mol | 5.014 × 10^23 |
| 100 g | 1.6652 mol | 1.003 × 10^24 |
| 250 g | 4.1631 mol | 2.507 × 10^24 |
| 60.052 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 Acetic acid?
The molar mass of Acetic acid (CH3COOH) is 60.052 g/mol. That is the sum of the standard atomic weights of all 8 atoms in one formula unit: 2 × 15.999 + 2 × 12.011 + 4 × 1.008 = 60.052.
What is the molecular weight of Acetic acid?
60.052 — 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 60.05 and a molar mass of 60.05 g/mol are the same answer.
How many moles are in 100 g of Acetic acid?
100 ÷ 60.052 = 1.6652 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Acetic acid?
By mass, Acetic acid is 53.28% oxygen, 40.00% carbon, 6.71% hydrogen. Each element's share is its total mass in the formula divided by 60.052.
How many atoms are in one formula unit of Acetic acid?
8: 2 oxygen, 2 carbon, 4 hydrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Acetic acid contains 8 × 6.022 × 10²³ atoms in total.