Molar mass

Molar Mass of Sodium Dihydrogen Phosphate Monohydrate

The molar mass of sodium dihydrogen phosphate monohydrate (NaH2PO4·H2O) is 137.991 g/mol.

Sodium Dihydrogen Phosphate Monohydrate at a glance

PropertyValue
Molar mass137.991 g/mol
Molecular weight137.991 u
Chemical formulaNaH2PO4·H2O
Monoisotopic mass137.969405 u
CAS number10049-21-5
PubChem CID516949

How to calculate the molar mass of sodium dihydrogen phosphate monohydrate

1 × 22.99 + 4 × 1.008 + 1 × 30.974 + 5 × 15.999 = 137.991 g/mol

  1. Count the atoms in NaH2PO4·H2O: Na 1, H 4, P 1, O 5.
  2. Multiply each atom count by the atomic weight of the element.
  3. Add the results to get 137.991 g/mol.

Elemental composition of sodium dihydrogen phosphate monohydrate

ElementAtomsAtomic weightMass (g/mol)Mass %
Na Sodium122.9922.9916.661%
H Hydrogen41.0084.0322.9219%
P Phosphorus130.97430.97422.446%
O Oxygen515.99979.99557.971%

Grams and moles of sodium dihydrogen phosphate monohydrate

AmountEquals
1 g0.0072468 mol
10 g0.072468 mol
100 g0.72468 mol
0.1 mol13.799 g
1 mol137.99 g
1 g, in particles4.3642 × 10^21