Molar and molecular weight of KI

• Molecular formula: KI or IK
• Relative molecular weight of KI: 166.00277
• Molar mass of KI: 166.00277 g/mol (0.166 kg/mol)

Calculation of the relative molecular and molar mass of KI

• Mr[KI] = Ar[I] + Ar[K] = 126.90447 + 39.0983 = 166.00277
• Molar mass (kg/mol) = Mr[KI] : 1000 = 166.00277 : 1000 = 0.166 kg/mol

KI: percent composition by element

• Iodine (I) = 126.90447 : 166.00277 * 100 = 76.447 %
• Potassium (K) = 39.0983 : 166.00277 * 100 = 23.553 %

Molar mass calculator