Molar mass of phosphorus trichloride (PCl3)

The molar mass of phosphorus trichloride (PCl3) is 137.324 g/mol.

Step-by-step calculation

ElementAtomsAtomic massSubtotal
Phosphorus × 1 30.974 = 30.974
Chlorine × 3 35.45 = 106.35
Total137.324 g/mol

Percent composition by element

  • Phosphorus 22.56%
  • Chlorine 77.44%

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H2O NaCl CO2 C6H12O6 H2SO4 Ca(OH)2 CuSO4·5H2O C8H10N4O2

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Related compounds

PCl5 Phosphorus pentachloride NaCl Sodium chloride KCl Potassium chloride HCl Hydrochloric acid KClO3 Potassium chlorate AgCl Silver chloride

FAQ

What is the molar mass of PCl3?

The molar mass of phosphorus trichloride (PCl3) is 137.324 g/mol.

How do you calculate the molar mass of PCl3?

Multiply the atomic mass of each element by the number of its atoms in PCl3, then add the results: 1 × 30.974 (P) + 3 × 35.45 (Cl) = 137.324 g/mol.

What percentage of PCl3 is Chlorine?

Chlorine makes up 77.44% of the mass of phosphorus trichloride (PCl3).