Molar Mass of Citric acid
C6H8O7 — 192.123 g/mol, worked out element by element.
Molar mass of Citric acid, C₆H₈O₇
192.123 g/mol
Molecular weight 192.123 · 21 atoms per formula unit
Also known as: c6h8o7.
The sourness in citrus fruit and the hub of the metabolic cycle named after it.
How 192.123 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 7 | 15.999 | 111.993 | 58.29% |
| Carbon | 6 | 12.011 | 72.066 | 37.51% |
| Hydrogen | 8 | 1.008 | 8.064 | 4.20% |
| Total | 21 | 192.123 | 100% |
M = 7 × 15.999 + 6 × 12.011 + 8 × 1.008 = 192.123 g/mol
Grams to moles for Citric acid
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0052 mol | 3.135 × 10^21 |
| 10 g | 0.0520 mol | 3.135 × 10^22 |
| 25 g | 0.1301 mol | 7.836 × 10^22 |
| 50 g | 0.2602 mol | 1.567 × 10^23 |
| 100 g | 0.5205 mol | 3.135 × 10^23 |
| 250 g | 1.3012 mol | 7.836 × 10^23 |
| 192.123 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 Citric acid?
The molar mass of Citric acid (C6H8O7) is 192.123 g/mol. That is the sum of the standard atomic weights of all 21 atoms in one formula unit: 7 × 15.999 + 6 × 12.011 + 8 × 1.008 = 192.123.
What is the molecular weight of Citric acid?
192.123 — 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 192.12 and a molar mass of 192.12 g/mol are the same answer.
How many moles are in 100 g of Citric acid?
100 ÷ 192.123 = 0.5205 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Citric acid?
By mass, Citric acid is 58.29% oxygen, 37.51% carbon, 4.20% hydrogen. Each element's share is its total mass in the formula divided by 192.123.
How many atoms are in one formula unit of Citric acid?
21: 7 oxygen, 6 carbon, 8 hydrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Citric acid contains 21 × 6.022 × 10²³ atoms in total.