Molar and molecular weight of ClK

• Molecular formula: ClK or KCl
• Relative molecular weight of ClK: 74.5513
• Molar mass of ClK: 74.5513 g/mol (0.07455 kg/mol)

Calculation of the relative molecular and molar mass of ClK

• Mr[ClK] = Ar[Cl] + Ar[K] = 35.453 + 39.0983 = 74.5513
• Molar mass (kg/mol) = Mr[ClK] : 1000 = 74.5513 : 1000 = 0.07455 kg/mol

ClK: percent composition by element

• Chlorine (Cl) = 35.453 : 74.5513 * 100 = 47.555 %
• Potassium (K) = 39.0983 : 74.5513 * 100 = 52.445 %

Molar mass calculator