Which of the following substances will phosphoric acid interact with: KOH; MgO; SO2; HCl; Zn; Cu; BaCl2; KNO3; Na2CO3
| April 2, 2021 | education
H3PO4 + 3KOH = K3PO4 + 3H2O (water is formed);
2H3PO4 + 3MgO = Mg3 (PO4) 2 ↓ + 3H2O (water and precipitate are formed);
2H3PO4 + 3Zn = Zn3 (PO4) 2 ↓ + 3H2 (precipitate and gas are formed);
2H3PO4 + 3BaCl2 = Ba3 (PO4) 2 ↓ + 6HCl (precipitate and gas are formed);
2H3PO4 + 3Na2CO3 = 2Na3PO4 + 3H2O + 3CO2 (gas and water are evolved).
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