Molar mass of calcium hydroxide (Ca(OH)2)

The molar mass of calcium hydroxide (Ca(OH)2) is 74.092 g/mol.

slaked lime

Step-by-step calculation

ElementAtomsAtomic massSubtotal
Calcium × 1 40.078 = 40.078
Oxygen × 2 15.999 = 31.998
Hydrogen × 2 1.008 = 2.016
Total74.092 g/mol

Percent composition by element

  • Calcium 54.09%
  • Oxygen 43.19%
  • Hydrogen 2.72%

Calcium hydroxide facts

  • Calcium hydroxide is a white, odorless powder that is only slightly soluble in water.
  • It is used in mortar and plaster, to raise the pH of acidic soils, in water treatment, and to treat corn for making tortillas.
  • A clear solution of calcium hydroxide, called limewater, turns milky when carbon dioxide is bubbled through it because insoluble calcium carbonate forms.

Try another formula

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

Could not read that formula

Related compounds

CaSO4·2H2O Calcium sulfate dihydrate Ca(HCO3)2 Calcium bicarbonate Ca(NO3)2·4H2O Calcium nitrate tetrahydrate CaCl2·2H2O Calcium chloride dihydrate Ca(H2PO4)2 Monocalcium phosphate Ca5(PO4)3OH Hydroxyapatite

FAQ

What is the molar mass of Ca(OH)2?

The molar mass of calcium hydroxide (Ca(OH)2) is 74.092 g/mol.

How do you calculate the molar mass of Ca(OH)2?

Multiply the atomic mass of each element by the number of its atoms in Ca(OH)2, then add the results: 1 × 40.078 (Ca) + 2 × 15.999 (O) + 2 × 1.008 (H) = 74.092 g/mol.

What percentage of Ca(OH)2 is Calcium?

Calcium makes up 54.09% of the mass of calcium hydroxide (Ca(OH)2).