Molar Mass of Sodium acetate
CH3COONa — 82.034 g/mol, worked out element by element.
Molar mass of Sodium acetate, CH₃COONa
82.034 g/mol
Molecular weight 82.034 · 8 atoms per formula unit
Also known as: ch3coona, nac2h3o2.
The conjugate base half of the acetic acid buffer, and the salt in reusable heat packs.
How 82.034 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 2 | 15.999 | 31.998 | 39.01% |
| Carbon | 2 | 12.011 | 24.022 | 29.28% |
| Sodium | 1 | 22.99 | 22.990 | 28.02% |
| Hydrogen | 3 | 1.008 | 3.024 | 3.69% |
| Total | 8 | 82.034 | 100% |
M = 2 × 15.999 + 2 × 12.011 + 1 × 22.990 + 3 × 1.008 = 82.034 g/mol
Grams to moles for Sodium acetate
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0122 mol | 7.341 × 10^21 |
| 10 g | 0.1219 mol | 7.341 × 10^22 |
| 25 g | 0.3048 mol | 1.835 × 10^23 |
| 50 g | 0.6095 mol | 3.671 × 10^23 |
| 100 g | 1.2190 mol | 7.341 × 10^23 |
| 250 g | 3.0475 mol | 1.835 × 10^24 |
| 82.034 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 Sodium acetate?
The molar mass of Sodium acetate (CH3COONa) is 82.034 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 + 1 × 22.990 + 3 × 1.008 = 82.034.
What is the molecular weight of Sodium acetate?
82.034 — 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 82.03 and a molar mass of 82.03 g/mol are the same answer.
How many moles are in 100 g of Sodium acetate?
100 ÷ 82.034 = 1.2190 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Sodium acetate?
By mass, Sodium acetate is 39.01% oxygen, 29.28% carbon, 28.02% sodium, 3.69% hydrogen. Each element's share is its total mass in the formula divided by 82.034.
How many atoms are in one formula unit of Sodium acetate?
8: 2 oxygen, 2 carbon, 1 sodium, 3 hydrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Sodium acetate contains 8 × 6.022 × 10²³ atoms in total.