List the metal salts that form acidic solutions. Write the chemical reaction equ

Question

List the metal salts that form acidic solutions. Write the chemical reaction equations of each metal ion (not the metal salt) combining with water to make the solution acidic.Find the salt that contains the conjugate acid of a weak base as the cation. Write the chemical reaction equation of the cation reacting with water to form the weak base and H3O+.

Salts pH I. NaOH 2. NaCl 3. HC2H3O2 4. NaC2H3O2 5. Fe(NO, d to 6. Narco, 7. HCI 8. HNO3 9. KNO3 10. NaNO S 11. CuSO 3 12. CoCl2 Salts pH 13. NaHCO3 14. NH4Cl 15. NaNO3 S 16. Na3PO4 17. Maso, 18. Al(NO3 3. 19. NiCl 20. Na2SO4 21. KOH 22. Na2HPO4 23. H2SO4 24. KC1

Explanation / Answer

SOLUTION
(A) Salts that will form acidic solution: The salts of strong acids and weak bases will form acidic solutions. These salts are given below

1. (Fe(NO3)2 Fe2+ + 2H2O --------> Fe(OH)2 + 2H+

2. CuSO4   Cu2+ + 2H2O --------> Cu(OH)2 + 2H+

3. CoCl2   Co2+ + 2H2O --------> Co(OH)2 + 2H+

4. NH4Cl NH4+ + H2O --------> NH4OH + H+

5. Al(NO3)3 Al3+ + 3H2O --------> Al(OH)3 + 3H+

6. NiCl2   Ni2+ + 2H2O --------> Ni(OH)2 + 2H+

All the above salts contain conjugate acids of a weak bases.

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