Molar Mass of Sucrose
C12H22O11 — 342.297 g/mol, worked out element by element.
Molar mass of Sucrose, C₁₂H₂₂O₁₁
342.297 g/mol
Molecular weight 342.297 · 45 atoms per formula unit
Also known as: c12h22o11, table sugar, saccharose.
Table sugar: glucose and fructose joined with the loss of one water.
How 342.297 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 11 | 15.999 | 175.989 | 51.41% |
| Carbon | 12 | 12.011 | 144.132 | 42.11% |
| Hydrogen | 22 | 1.008 | 22.176 | 6.48% |
| Total | 45 | 342.297 | 100% |
M = 11 × 15.999 + 12 × 12.011 + 22 × 1.008 = 342.297 g/mol
Grams to moles for Sucrose
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0029 mol | 1.759 × 10^21 |
| 10 g | 0.0292 mol | 1.759 × 10^22 |
| 25 g | 0.0730 mol | 4.398 × 10^22 |
| 50 g | 0.1461 mol | 8.797 × 10^22 |
| 100 g | 0.2921 mol | 1.759 × 10^23 |
| 250 g | 0.7304 mol | 4.398 × 10^23 |
| 342.297 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 Sucrose?
The molar mass of Sucrose (C12H22O11) is 342.297 g/mol. That is the sum of the standard atomic weights of all 45 atoms in one formula unit: 11 × 15.999 + 12 × 12.011 + 22 × 1.008 = 342.297.
What is the molecular weight of Sucrose?
342.297 — 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 342.30 and a molar mass of 342.30 g/mol are the same answer.
How many moles are in 100 g of Sucrose?
100 ÷ 342.297 = 0.2921 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Sucrose?
By mass, Sucrose is 51.41% oxygen, 42.11% carbon, 6.48% hydrogen. Each element's share is its total mass in the formula divided by 342.297.
How many atoms are in one formula unit of Sucrose?
45: 11 oxygen, 12 carbon, 22 hydrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Sucrose contains 45 × 6.022 × 10²³ atoms in total.