Molar and molecular weight of K2HPO4

• Molecular formula: K2HPO4 or HK2O4P
• Relative molecular weight of K2HPO4: 174.175902
• Molar mass of K2HPO4: 174.175902 g/mol (0.17418 kg/mol)

Calculation of the relative molecular and molar mass of K2HPO4

• Mr[K2HPO4] = Ar[H] + Ar[K] * 2 + Ar[O] * 4 + Ar[P] = 1.00794 + 39.0983 * 2 + 15.9994 * 4 + 30.973762 = 174.175902
• Molar mass (kg/mol) = Mr[K2HPO4] : 1000 = 174.175902 : 1000 = 0.17418 kg/mol

K2HPO4: percent composition by element

• Hydrogen (H) = 1.00794 : 174.175902 * 100 = 0.579 %
• Potassium (K) = 78.1966 : 174.175902 * 100 = 44.895 %
• Oxygen (O) = 63.9976 : 174.175902 * 100 = 36.743 %
• Phosphorus (P) = 30.973762 : 174.175902 * 100 = 17.783 %

Molar mass calculator