Molar Mass of PCl5 (Phosphorus Pentachloride)
Molar Mass Calculator
What is the molar mass of PCl5?
Answer
M(PCl5) ≈
208.22 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Cl: 35.45.
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Pphosphorus | 1 | 30.974 | 30.974 w ≈ 14.88% | ≈ 14.88% |
| Clchlorine | 5 | 35.45 | 177.25 w ≈ 85.12% | ≈ 85.12% |
| Σ = 208.224 ≈ 208.22 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
Cl 85.12%
P 14.88%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| Tl (thallium) | 204.38 |
| Ca(ClO₃)₂ (calcium chlorate) | 206.97 |
| Pb (lead) | 207.2 |
| PCl₅ (phosphorus pentachloride) | 208.22 |
| BaCl₂ (barium chloride) | 208.23 |
| Bi (bismuth) | 208.98 |
| Sr(NO₃)₂ (strontium nitrate) | 211.63 |