Molar and molecular weight of H4P2O7

• Molecular formula: H4P2O7 or H4O7P2
• Relative molecular weight of H4P2O7: 177.975084
• Molar mass of H4P2O7: 177.975084 g/mol (0.17798 kg/mol)

Calculation of the relative molecular and molar mass of H4P2O7

• Mr[H4P2O7] = Ar[H] * 4 + Ar[O] * 7 + Ar[P] * 2 = 1.00794 * 4 + 15.9994 * 7 + 30.973762 * 2 = 177.975084
• Molar mass (kg/mol) = Mr[H4P2O7] : 1000 = 177.975084 : 1000 = 0.17798 kg/mol

H4P2O7: percent composition by element

• Hydrogen (H) = 4.03176 : 177.975084 * 100 = 2.265 %
• Oxygen (O) = 111.9958 : 177.975084 * 100 = 62.928 %
• Phosphorus (P) = 61.947524 : 177.975084 * 100 = 34.807 %

Molar mass calculator