Question

Which ions remain in solution, unreacted, after each of the following pairs of solutions is mixed?

(a) When KCl is mixed with AgNO3, K⁺ and NO3⁻ remain in solution.
(b) When BaCl2 is mixed with Na2SO4, BaSO4 precipitates and Cl⁻ and Na⁺ remain in solution.
(c) When NH4Cl is mixed with KOH, NH3 and H2O escape as a gas, and Cl⁻ and K⁺ remain in solution.
(d) All of the above

Answer 1

In each pair of solutions, certain ions remain in solution while others form solid precipitates.

Step-by-step explanation:

In each of the following pairs of solutions, certain ions remain in solution while others form solid precipitates:

(a) When KCl is mixed with AgNO3, K⁺ and NO3⁻ ions remain in solution.

(b) When BaCl2 is mixed with Na2SO4, BaSO4 precipitates and Cl⁻ and Na⁺ ions remain in solution.

(c) When NH4Cl is mixed with KOH, NH3 and H2O escape as a gas, and Cl⁻ and K⁺ ions remain in solution.

In summary, the ions that remain in solution after the pairs of solutions are mixed depend on the chemical reactions that take place between the ions in the solutions.