Molar mass of monopotassium phosphate (KH2PO4)

The molar mass of monopotassium phosphate (KH2PO4) is 136.084 g/mol.

potassium dihydrogen phosphate

Step-by-step calculation

Element	Atoms	Atomic mass	Subtotal
Potassium	× 1	39.098	= 39.098
Hydrogen	× 2	1.008	= 2.016
Phosphorus	× 1	30.974	= 30.974
Oxygen	× 4	15.999	= 63.996
Total			136.084 g/mol

Percent composition by element

Potassium 28.73%
Hydrogen 1.48%
Phosphorus 22.76%
Oxygen 47.03%

Try another formula

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

Could not read that formula

Related compounds

K₂HPO₄ Dipotassium phosphate KOH Potassium hydroxide KAl(SO₄)₂·12H₂O Potassium alum H₃PO₄ Phosphoric acid KHC₈H₄O₄ Potassium hydrogen phthalate K₃PO₄ Potassium phosphate

FAQ

What is the molar mass of KH2PO4?

The molar mass of monopotassium phosphate (KH2PO4) is 136.084 g/mol.

How do you calculate the molar mass of KH2PO4?

Multiply the atomic mass of each element by the number of its atoms in KH2PO4, then add the results: 1 × 39.098 (K) + 2 × 1.008 (H) + 1 × 30.974 (P) + 4 × 15.999 (O) = 136.084 g/mol.

What percentage of KH2PO4 is Oxygen?

Oxygen makes up 47.03% of the mass of monopotassium phosphate (KH2PO4).