Molar and molecular weight of PCl3

• Molecular formula: PCl3 or Cl3P
• Relative molecular weight of PCl3: 137.332762
• Molar mass of PCl3: 137.332762 g/mol (0.13733 kg/mol)

Calculation of the relative molecular and molar mass of PCl3

• Mr[PCl3] = Ar[Cl] * 3 + Ar[P] = 35.453 * 3 + 30.973762 = 137.332762
• Molar mass (kg/mol) = Mr[PCl3] : 1000 = 137.332762 : 1000 = 0.13733 kg/mol

PCl3: percent composition by element

• Chlorine (Cl) = 106.359 : 137.332762 * 100 = 77.446 %
• Phosphorus (P) = 30.973762 : 137.332762 * 100 = 22.554 %

Molar mass calculator