Molar and molecular weight of K2SO4

• Molecular formula: K2SO4 or K2O4S
• Relative molecular weight of K2SO4: 174.2592
• Molar mass of K2SO4: 174.2592 g/mol (0.17426 kg/mol)

Calculation of the relative molecular and molar mass of K2SO4

• Mr[K2SO4] = Ar[K] * 2 + Ar[O] * 4 + Ar[S] = 39.0983 * 2 + 15.9994 * 4 + 32.065 = 174.2592
• Molar mass (kg/mol) = Mr[K2SO4] : 1000 = 174.2592 : 1000 = 0.17426 kg/mol

K2SO4: percent composition by element

• Potassium (K) = 78.1966 : 174.2592 * 100 = 44.874 %
• Oxygen (O) = 63.9976 : 174.2592 * 100 = 36.726 %
• Sulfur (S) = 32.065 : 174.2592 * 100 = 18.401 %

Molar mass calculator