Molar Mass of KCl (Potassium Chloride)
Molar Mass Calculator
What is the molar mass of KCl?
Answer
M(KCl) ≈
74.55 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 | |
|---|---|---|---|---|
| Kpotassium | 1 | 39.098 | 39.098 w ≈ 52.45% | ≈ 52.45% |
| Clchlorine | 1 | 35.45 | 35.45 w ≈ 47.55% | ≈ 47.55% |
| Σ = 74.548 ≈ 74.55 g/mol w = 100% | 100% | |||
Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)
K 52.45%Cl 47.55%
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Molar masses of substances nearby
| Formula | M, g/mol |
|---|---|
| Ca(OH)₂ (calcium hydroxide) | 74.092 |
| CH₃CH₂OCH₂CH₃ (diethyl ether) | 74.123 |
| NaOCl (sodium hypochlorite) | 74.44 |
| KCl (potassium chloride) | 74.55 |
| NiO (nickel(II) oxide) | 74.692 |
| As (arsenic) | 74.922 |
| CoO (cobalt(II) oxide) | 74.932 |