Molar mass of edta (C₁₀H₁₆N₂O₈)

The molar mass of edta (C₁₀H₁₆N₂O₈) is 292.244 g/mol, summed from the IUPAC standard atomic weights of C x 10, H x 16, N x 2, O x 8.

Mass of sample

Amount of substance

mol

Molar mass

292.244g/mol

= Exact Molar mass of edta

Moles in the sample mass: 0.034 217 982 mol
Mass of that amount of substance: 292.244
Molecules in the sample mass: 2.06066e+22

Show the working

Mass of sample = 10
Amount of substance = 1
Molar mass = 12.011*10 + 1.008*16 + 14.007*2 + 15.999*8 = 292.244
Moles in the sample mass = 10 / 292.244 = 0.034 218
Mass of that amount of substance = 1 * 292.244 = 292.244
Molecules in the sample mass = 0.034 218 * NA = 2.06066e+22

Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.

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The formula

Molar mass = sum over elements of (atomic weight x number of atoms)
For C₁₀H₁₆N₂O₈: 12.011 x 10 + 1.008 x 16 + 14.007 x 2 + 15.999 x 8 = 292.244 g/mol
Moles = mass / molar mass; mass = moles x molar mass
Molecules = moles x 6.02214076 x 10^23 (the Avogadro constant, exact by definition)

Molar mass in grams per mole is numerically equal to the molecular mass in daltons, so this figure doubles as the molecular weight.

Atomic weights are the IUPAC 2021 standard values. Several elements have a range rather than a single value because isotope ratios vary between sources; the conventional single value is used here.

Composition by mass

Element	Atoms	Atomic weight	Contribution (g/mol)	Share of mass
Oxygen (O)	8	15.999	127.992	43.796 %
Carbon (C)	10	12.011	120.11	41.099 %
Nitrogen (N)	2	14.007	28.014	9.5858 %
Hydrogen (H)	16	1.008	16.128	5.5187 %

Contributions add to the molar mass of 292.244 g/mol. Atomic weights are the IUPAC 2021 standard values.

Frequently asked

What is the molar mass of edta?

292.244 g/mol, for the formula C₁₀H₁₆N₂O₈.

How do you convert grams of edta to moles?

Divide the mass in grams by 292.244 g/mol. One gram of edta is 0.0034218 mol.

How many grams are in one mole of edta?

292.244 g, by definition of the molar mass.

Is molar mass the same as molecular weight?

Numerically yes, for the purposes of this calculation. Molecular weight is a dimensionless ratio and molar mass carries units of g/mol, but the digits are identical.

Where the numbers come from

IUPAC 2021 standard atomic weights; Avogadro constant fixed by the 2019 SI.