Molar mass of potassium chloride (KCl)

The molar mass of potassium chloride (KCl) is 74.548 g/mol.

Step-by-step calculation

ElementAtomsAtomic massSubtotal
Potassium × 1 39.098 = 39.098
Chlorine × 1 35.45 = 35.45
Total74.548 g/mol

Percent composition by element

  • Potassium 52.45%
  • Chlorine 47.55%

Potassium chloride facts

  • Potassium chloride is a white or colorless crystalline salt that tastes similar to table salt but with a slightly bitter aftertaste.
  • It is mined as the mineral sylvite and used mainly as a potash fertilizer, as well as in salt substitutes and to treat low potassium levels.
  • It has the same cubic crystal structure as sodium chloride, and its concentrated solutions are used in salt bridges and reference electrodes.

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

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Related compounds

KClO3 Potassium chlorate KClO4 Potassium perchlorate NaCl Sodium chloride HCl Hydrochloric acid KOH Potassium hydroxide AgCl Silver chloride

FAQ

What is the molar mass of KCl?

The molar mass of potassium chloride (KCl) is 74.548 g/mol.

How do you calculate the molar mass of KCl?

Multiply the atomic mass of each element by the number of its atoms in KCl, then add the results: 1 × 39.098 (K) + 1 × 35.45 (Cl) = 74.548 g/mol.

What percentage of KCl is Potassium?

Potassium makes up 52.45% of the mass of potassium chloride (KCl).