Molar Mass of Sodium hypochlorite
NaOCl — 74.439 g/mol, worked out element by element.
Molar mass of Sodium hypochlorite, NaOCl
74.439 g/mol
Molecular weight 74.439 · 3 atoms per formula unit
Also known as: naocl, bleach.
Household bleach; the active chlorine is in the +1 oxidation state, not as chloride.
How 74.439 g/mol is worked out
| Element | Atoms | Atomic mass | Mass | % of total |
|---|---|---|---|---|
| Chlorine | 1 | 35.45 | 35.450 | 47.62% |
| Sodium | 1 | 22.99 | 22.990 | 30.88% |
| Oxygen | 1 | 15.999 | 15.999 | 21.49% |
| Total | 3 | 74.439 | 100% |
M = 1 × 35.450 + 1 × 22.990 + 1 × 15.999 = 74.439 g/mol
Grams to moles for Sodium hypochlorite
| Mass | Moles | Formula units |
|---|---|---|
| 1 g | 0.0134 mol | 8.090 × 10^21 |
| 10 g | 0.1343 mol | 8.090 × 10^22 |
| 25 g | 0.3358 mol | 2.023 × 10^23 |
| 50 g | 0.6717 mol | 4.045 × 10^23 |
| 100 g | 1.3434 mol | 8.090 × 10^23 |
| 250 g | 3.3585 mol | 2.023 × 10^24 |
| 74.439 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 hypochlorite?
The molar mass of Sodium hypochlorite (NaOCl) is 74.439 g/mol. That is the sum of the standard atomic weights of all 3 atoms in one formula unit: 1 × 35.450 + 1 × 22.990 + 1 × 15.999 = 74.439.
What is the molecular weight of Sodium hypochlorite?
74.439 — 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 74.44 and a molar mass of 74.44 g/mol are the same answer.
How many moles are in 100 g of Sodium hypochlorite?
100 ÷ 74.439 = 1.3434 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 hypochlorite?
By mass, Sodium hypochlorite is 47.62% chlorine, 30.88% sodium, 21.49% oxygen. Each element's share is its total mass in the formula divided by 74.439.
How many atoms are in one formula unit of Sodium hypochlorite?
3: 1 chlorine, 1 sodium, 1 oxygen. One mole contains 6.02214076 × 10²³ formula units, so a mole of Sodium hypochlorite contains 3 × 6.022 × 10²³ atoms in total.