The number of different salts that can be formed during the simultaneous dissolution of phosphorus (V)
| August 28, 2021 | education
The number of different salts that can be formed during the simultaneous dissolution of phosphorus (V) and potassium oxide in water.
The equations for the reactions of these oxides with water:
K2O + H2O = 2KOH,
P2O5 + 3H2O = 2H3PO4.
The equations for the reactions of salt formation (depending on the molar ratio of oxides):
KOH + H3PO4 = KH2PO4 + H2O (potassium dihydrogen phosphate is formed, ratio 1: 1),
2KOH + H3PO4 = K2HPO4 + 2H2O (potassium hydrogen phosphate is formed, ratio 2: 1),
3KOH + H3PO4 = K3PO4 + 3H2O (potassium phosphate is formed, ratio 3: 1).
Thus, all 3 (three) different salts can be formed simultaneously, but predominantly a salt corresponding to the molar ratio of oxides will be formed.
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