Question

What reagent might be used to separate the ions in each of the following mixtures, which are 0.1 M with respect to each ion? In some cases, it may be necessary to control the pH. (Hint: Consider the Ksp values given in Appendix J.)

a) NaOH

b) HCl

c) NH3

d) H2SO4

Answer 1

To separate ions in a mixture, different reagents can be used depending on the specific ions present.

Step-by-step explanation:

To separate ions in a mixture, different reagents can be used depending on the specific ions present.

Here are the reagents that can be used for each mixture:

a) Hg22+ and Cu2+: Sodium sulfide (Na2S) can be used to precipitate Hg2S, while copper remains in solution.

b) SO42- and Cl-: Silver nitrate (AgNO3) can be used to precipitate AgCl, while sulfate remains in solution.

c) Hg2+ and Co2+: Ammonium sulfide (NH4)2S can be used to precipitate HgS, while cobalt remains in solution.

d) Zn2+ and Sr2+: Sodium carbonate (Na2CO3) can be used to precipitate ZnCO3, while strontium remains in solution.

e) Ba2+ and Mg2+: Sodium sulfate (Na2SO4) can be used to precipitate BaSO4, while magnesium remains in solution.