Molar Mass of Al2(SO4)3 (Aluminium Sulfate)
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What is the molar mass of Al2(SO4)3?
Answer
M(Al2(SO4)3) ≈
342.13 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — S: 32.06.
Al2(SO4)3 = 2 Al + 3 × (S + 4 O) → Al 2, S 3, O 12
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Alaluminium | 2 | 26.982 | 53.964 w ≈ 15.77% | ≈ 15.77% |
| Ssulfur | 3 | 32.06 | 96.18 w ≈ 28.11% | ≈ 28.11% |
| Ooxygen | 12 | 15.999 | 191.988 w ≈ 56.12% | ≈ 56.12% |
| Σ = 342.132 ≈ 342.13 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
O 56.12%
S 28.11%Al 15.77%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| (CH₃COO)₂Pb (lead(II) acetate) | 325.3 |
| CCs₂O₃ (cesium carbonate) | 325.83 |
| Pb(NO₃)₂ (lead(II) nitrate) | 331.2 |
| Al₂(SO₄)₃ (aluminium sulfate) | 342.13 |
| C₁₂H₂₂O₁₁ (sucrose) | 342.297 |
| AgC₁₀H₉N₄SO₂ | 357.14 |
| Na₂B₄O₇·10H₂O | 381.36 |