Na2S+K3PO4

The reaction between sodium sulfide (Na₂S) and potassium phosphate (K₃PO₄) involves a double displacement (or metathesis) reaction.

When these two compounds react, they can form potassium sulfide (K₂S) and sodium phosphate (Na₃PO₄). The balanced chemical equation for this reaction is:

\[ 3 \text{Na}_2\text{S} + 2 \text{K}_3\text{PO}_4 \rightarrow 6 \text{Na}_3\text{PO}_4 + 3 \text{K}_2\text{S} \]

However, it's important to check the solubility of the resulting products, as some combinations can lead to solid precipitates.

• Sodium phosphate (Na₃PO₄) is soluble in water.
• Potassium sulfide (K₂S) is also soluble in water.

Ensure to consider the states of the reactants and products for a complete analysis. If you're studying for chemistry-related university exams, also take note of stoichiometry and balancing chemical equations!