Molar Mass of K2CO3 (Potassium Carbonate)
Molar Mass Calculator
What is the molar mass of K2CO3?
Answer
M(K2CO3) =
138.204 g/mol
Atomic weights: IUPAC standard values (CIAAW, 2024).
| Element | Atoms, n | Atomic weight, A | n × A, g/mol Mass fraction, w | |
|---|---|---|---|---|
| Kpotassium | 2 | 39.098 | 78.196 w ≈ 56.58% | ≈ 56.58% |
| Ccarbon | 1 | 12.011 | 12.011 w ≈ 8.69% | ≈ 8.69% |
| Ooxygen | 3 | 15.999 | 47.997 w ≈ 34.73% | ≈ 34.73% |
| Σ = 138.204 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
K 56.58%
O 34.73%C 8.69%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| PCl₃ (phosphorus trichloride) | 137.32 |
| Ba (barium) | 137.33 |
| C₇H₆O₃ (salicylic acid) | 138.122 |
| K₂CO₃ (potassium carbonate) | 138.204 |
| La (lanthanum) | 138.91 |
| Ce (cerium) | 140.12 |
| C₆H₁₂N₄ (methenamine) | 140.190 |