Molar mass of potassium perchlorate (KClO4)

The molar mass of potassium perchlorate (KClO4) is 138.544 g/mol.

Step-by-step calculation

ElementAtomsAtomic massSubtotal
Potassium × 1 39.098 = 39.098
Chlorine × 1 35.45 = 35.45
Oxygen × 4 15.999 = 63.996
Total138.544 g/mol

Percent composition by element

  • Potassium 28.22%
  • Chlorine 25.59%
  • Oxygen 46.19%

Try another formula

H2O NaCl CO2 C6H12O6 H2SO4 Ca(OH)2 CuSO4·5H2O C8H10N4O2

Could not read that formula

Related compounds

KClO3 Potassium chlorate KCl Potassium chloride KOH Potassium hydroxide KAl(SO4)2·12H2O Potassium alum K2Cr2O7 Potassium dichromate KMnO4 Potassium permanganate

FAQ

What is the molar mass of KClO4?

The molar mass of potassium perchlorate (KClO4) is 138.544 g/mol.

How do you calculate the molar mass of KClO4?

Multiply the atomic mass of each element by the number of its atoms in KClO4, then add the results: 1 × 39.098 (K) + 1 × 35.45 (Cl) + 4 × 15.999 (O) = 138.544 g/mol.

What percentage of KClO4 is Oxygen?

Oxygen makes up 46.19% of the mass of potassium perchlorate (KClO4).