Molar Mass of Pb(OH)2 (Lead(II) Hydroxide)
Molar Mass Calculator
What is the molar mass of Pb(OH)2?
Answer
M(Pb(OH)2) ≈
241.2 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Pb: 207.2.
Pb(OH)2 = Pb + 2 × (O + H) → Pb 1, O 2, H 2
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Pblead | 1 | 207.2 | 207.2 w ≈ 85.90% | ≈ 85.90% |
| Ooxygen | 2 | 15.999 | 31.998 w ≈ 13.27% | ≈ 13.27% |
| Hhydrogen | 2 | 1.0080 | 2.0160 w ≈ 0.84% | ≈ 0.84% |
| Σ = 241.214 ≈ 241.2 g/mol w = 100% | 100% | |||
Each fraction is rounded on its own, so the printed ones add up to 100.01%; unrounded, they make exactly 100%.
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
Pb 85.90%
O 13.27%H 0.84%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| U (uranium) | 238.03 |
| PbO₂ (lead dioxide) | 239.2 |
| PbS (lead(II) sulfide) | 239.3 |
| Pb(OH)₂ (lead(II) hydroxide) | 241.2 |
| Fe(NO₃)₃ (ferric nitrate) | 241.857 |
| BaCl₂·2H₂O (barium chloride dihydrate) | 244.26 |
| C₁₀H₁₆N₂O₃S (biotin) | 244.31 |