Molar Mass of Sodium phosphate
Na3PO4 — 163.940 g/mol, worked out element by element.
Molar mass of Sodium phosphate, Na₃PO₄
163.940 g/mol
Molecular weight 163.940 · 8 atoms per formula unit
Also known as: na3po4, trisodium phosphate, tsp.
A strongly alkaline cleaning agent; the tribasic member of the sodium phosphate family.
How 163.940 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Sodium | 3 | 22.99 | 68.970 | 42.07% |
| Oxygen | 4 | 15.999 | 63.996 | 39.04% |
| Phosphorus | 1 | 30.974 | 30.974 | 18.89% |
| Total | 8 | 163.940 | 100% |
M = 3 × 22.990 + 4 × 15.999 + 1 × 30.974 = 163.940 g/mol
Grams to moles for Sodium phosphate
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0061 mol | 3.673 × 10^21 |
| 10 g | 0.0610 mol | 3.673 × 10^22 |
| 25 g | 0.1525 mol | 9.183 × 10^22 |
| 50 g | 0.3050 mol | 1.837 × 10^23 |
| 100 g | 0.6100 mol | 3.673 × 10^23 |
| 250 g | 1.5249 mol | 9.183 × 10^23 |
| 163.940 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 phosphate?
The molar mass of Sodium phosphate (Na3PO4) is 163.940 g/mol. That is the sum of the standard atomic weights of all 8 atoms in one formula unit: 3 × 22.990 + 4 × 15.999 + 1 × 30.974 = 163.940.
What is the molecular weight of Sodium phosphate?
163.940 — 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 163.94 and a molar mass of 163.94 g/mol are the same answer.
How many moles are in 100 g of Sodium phosphate?
100 ÷ 163.940 = 0.6100 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 phosphate?
By mass, Sodium phosphate is 42.07% sodium, 39.04% oxygen, 18.89% phosphorus. Each element's share is its total mass in the formula divided by 163.940.
How many atoms are in one formula unit of Sodium phosphate?
8: 3 sodium, 4 oxygen, 1 phosphorus. One mole contains 6.02214076 × 10²³ formula units, so a mole of Sodium phosphate contains 8 × 6.022 × 10²³ atoms in total.