Molar and molecular weight of K2CrO4

• Molecular formula: K2CrO4 or CrK2O4
• Relative molecular weight of K2CrO4: 194.1903
• Molar mass of K2CrO4: 194.1903 g/mol (0.19419 kg/mol)

Calculation of the relative molecular and molar mass of K2CrO4

• Mr[K2CrO4] = Ar[Cr] + Ar[K] * 2 + Ar[O] * 4 = 51.9961 + 39.0983 * 2 + 15.9994 * 4 = 194.1903
• Molar mass (kg/mol) = Mr[K2CrO4] : 1000 = 194.1903 : 1000 = 0.19419 kg/mol

K2CrO4: percent composition by element

• Chromium (Cr) = 51.9961 : 194.1903 * 100 = 26.776 %
• Potassium (K) = 78.1966 : 194.1903 * 100 = 40.268 %
• Oxygen (O) = 63.9976 : 194.1903 * 100 = 32.956 %

Molar mass calculator