Molar Mass of Sulfuric acid
H2SO4 — 98.072 g/mol, worked out element by element.
Molar mass of Sulfuric acid, H₂SO₄
98.072 g/mol
Molecular weight 98.072 · 7 atoms per formula unit
Also known as: h2so4, sulphuric acid, oil of vitriol.
The most-produced industrial chemical in the world, and the standard diprotic acid.
How 98.072 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Oxygen | 4 | 15.999 | 63.996 | 65.25% |
| Sulfur | 1 | 32.06 | 32.060 | 32.69% |
| Hydrogen | 2 | 1.008 | 2.016 | 2.06% |
| Total | 7 | 98.072 | 100% |
M = 4 × 15.999 + 1 × 32.060 + 2 × 1.008 = 98.072 g/mol
Grams to moles for Sulfuric acid
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0102 mol | 6.141 × 10^21 |
| 10 g | 0.1020 mol | 6.141 × 10^22 |
| 25 g | 0.2549 mol | 1.535 × 10^23 |
| 50 g | 0.5098 mol | 3.070 × 10^23 |
| 100 g | 1.0197 mol | 6.141 × 10^23 |
| 250 g | 2.5491 mol | 1.535 × 10^24 |
| 98.072 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 Sulfuric acid?
The molar mass of Sulfuric acid (H2SO4) is 98.072 g/mol. That is the sum of the standard atomic weights of all 7 atoms in one formula unit: 4 × 15.999 + 1 × 32.060 + 2 × 1.008 = 98.072.
What is the molecular weight of Sulfuric acid?
98.072 — 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 98.07 and a molar mass of 98.07 g/mol are the same answer.
How many moles are in 100 g of Sulfuric acid?
100 ÷ 98.072 = 1.0197 mol. To convert any mass to moles, divide by the molar mass; to go the other way, multiply.
What is the percent composition of Sulfuric acid?
By mass, Sulfuric acid is 65.25% oxygen, 32.69% sulfur, 2.06% hydrogen. Each element's share is its total mass in the formula divided by 98.072.
How many atoms are in one formula unit of Sulfuric acid?
7: 4 oxygen, 1 sulfur, 2 hydrogen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Sulfuric acid contains 7 × 6.022 × 10²³ atoms in total.