Molar and molecular weight of C2H2O4

• Molecular formula: C2H2O4 or (COOH)2
• Relative molecular weight of C2H2O4: 90.03488
• Molar mass of C2H2O4: 90.03488 g/mol (0.09003 kg/mol)

Calculation of the relative molecular and molar mass of C2H2O4

• Mr[C2H2O4] = Ar[C] * 2 + Ar[H] * 2 + Ar[O] * 4 = 12.0107 * 2 + 1.00794 * 2 + 15.9994 * 4 = 90.03488
• Molar mass (kg/mol) = Mr[C2H2O4] : 1000 = 90.03488 : 1000 = 0.09003 kg/mol

C2H2O4: percent composition by element

• Carbon (C) = 24.0214 : 90.03488 * 100 = 26.68 %
• Hydrogen (H) = 2.01588 : 90.03488 * 100 = 2.239 %
• Oxygen (O) = 63.9976 : 90.03488 * 100 = 71.081 %

Molar mass calculator