Five ways to get K3 (PO4) 2.

Let’s write the equations:
1. 2H3PO4 + 3K2CO3 = 2K3PO4 + 3CO2 – ion exchange reaction;
2. 3KOH + H3PO4 = K3PO4 + 3H2O – ion exchange, potassium hydroxide interacts with phosphoric acid;
3. K2O + 2H3PO4 = 2K3PO4 + 3H2O – potassium oxide reacts with phosphoric acid;
4. P2O5 + 6KOH = 2K3PO4 + 3H2O – phosphorus oxide interacts with the base;
5. K2HPO4 + KOH = K3PO4 + H2O – potassium hydrogen phosphate (acidic salt) reacts with alkali.
The production of potassium phosphate is provided by ion exchange reactions; the need for this salt is associated with its use in the production of detergents. as well as water softening.

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