Molar Mass of Carbonic acid
H2CO3 — 62.024 g/mol, worked out element by element.
Molar mass of Carbonic acid, H₂CO₃
62.024 g/mol
Molecular weight 62.024 · 6 atoms per formula unit
Also known as: h2co3.
Formed when CO₂ dissolves in water; the buffer that holds blood pH near 7.4.
How 62.024 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 3 | 15.999 | 47.997 | 77.38% |
| Carbon | 1 | 12.011 | 12.011 | 19.37% |
| Hydrogen | 2 | 1.008 | 2.016 | 3.25% |
| Total | 6 | 62.024 | 100% |
M = 3 × 15.999 + 1 × 12.011 + 2 × 1.008 = 62.024 g/mol
Grams to moles for Carbonic acid
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0161 mol | 9.709 × 10^21 |
| 10 g | 0.1612 mol | 9.709 × 10^22 |
| 25 g | 0.4031 mol | 2.427 × 10^23 |
| 50 g | 0.8061 mol | 4.855 × 10^23 |
| 100 g | 1.6123 mol | 9.709 × 10^23 |
| 250 g | 4.0307 mol | 2.427 × 10^24 |
| 62.024 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 Carbonic acid?
The molar mass of Carbonic acid (H2CO3) is 62.024 g/mol. That is the sum of the standard atomic weights of all 6 atoms in one formula unit: 3 × 15.999 + 1 × 12.011 + 2 × 1.008 = 62.024.
What is the molecular weight of Carbonic acid?
62.024 — 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 62.02 and a molar mass of 62.02 g/mol are the same answer.
How many moles are in 100 g of Carbonic acid?
100 ÷ 62.024 = 1.6123 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Carbonic acid?
By mass, Carbonic acid is 77.38% oxygen, 19.37% carbon, 3.25% hydrogen. Each element's share is its total mass in the formula divided by 62.024.
How many atoms are in one formula unit of Carbonic acid?
6: 3 oxygen, 1 carbon, 2 hydrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Carbonic acid contains 6 × 6.022 × 10²³ atoms in total.