The molar mass of potassium chlorate (KClO3) is calculated by adding the atomic masses of its constituent elements. Here’s how it’s done:
- Potassium (K) has an atomic mass of approximately 39.1 g/mol.
- Chlorine (Cl) has an atomic mass of approximately 35.5 g/mol.
- Oxygen (O) has an atomic mass of approximately 16.0 g/mol.
Since potassium chlorate has one potassium atom, one chlorine atom, and three oxygen atoms, the molar mass is calculated as follows:
Molar mass of KClO3 = (1 × 39.1) + (1 × 35.5) + (3 × 16.0) = 39.1 + 35.5 + 48.0 = 122.6 g/mol
Therefore, the molar mass of potassium chlorate is 122.6 g/mol.