Molar mass of potassium dichromate (K2Cr2O7)

The molar mass of potassium dichromate (K2Cr2O7) is 294.181 g/mol.

Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Potassium	× 2	39.098	= 78.196
Chromium	× 2	51.996	= 103.992
Oxygen	× 7	15.999	= 111.993
Total			294.181 g/mol

Percent composition by element

Potassium 26.58%
Chromium 35.35%
Oxygen 38.07%

Try another formula

H₂O NaCl CO₂ C₆H₁₂O₆ H₂SO₄ Ca(OH)₂ CuSO₄·5H₂O C₈H₁₀N₄O₂

Could not read that formula

Related compounds

K₂CrO₄ Potassium chromate KOH Potassium hydroxide KClO₃ Potassium chlorate KAl(SO₄)₂·12H₂O Potassium alum KMnO₄ Potassium permanganate KNO₃ Potassium nitrate

FAQ

What is the molar mass of K2Cr2O7?

The molar mass of potassium dichromate (K2Cr2O7) is 294.181 g/mol.

How do you calculate the molar mass of K2Cr2O7?

Multiply the atomic mass of each element by the number of its atoms in K2Cr2O7, then add the results: 2 × 39.098 (K) + 2 × 51.996 (Cr) + 7 × 15.999 (O) = 294.181 g/mol.

What percentage of K2Cr2O7 is Oxygen?

Oxygen makes up 38.07% of the mass of potassium dichromate (K2Cr2O7).