Solution Found!
Which of the following scenes best represents how the ions
Chapter 4, Problem 4P(choose chapter or problem)
Which of the following best represents how the ions occur in aqueous solutions of
(a) \(\mathrm{CaCl}_{2} \text {, }\)
(b) \(\mathrm{Li}_{2} \mathrm{SO}_{4}\), and
(c) \(\mathrm{NH}_{4} \mathrm{Br}\)?
Questions & Answers
QUESTION:
Which of the following best represents how the ions occur in aqueous solutions of
(a) \(\mathrm{CaCl}_{2} \text {, }\)
(b) \(\mathrm{Li}_{2} \mathrm{SO}_{4}\), and
(c) \(\mathrm{NH}_{4} \mathrm{Br}\)?
Step 1 of 3
(a)In \({\rm{CaC}}{{\rm{l}}_{\rm{2}}}\) in an aqueous solution, \({\rm{CaC}}{{\rm{l}}_{\rm{2}}}\) dissociates into \(C{a^{2 + }}\) and \(C{l^ - }\) ions. It produces one ion of calcium and two ions of chloride. So the count of anions is twice the count of cations.
\(CaC{l_2}\left( s \right) \to C{a^{2 + }}\left( {aq} \right) + 2C{l^ - }\left( {aq} \right)\)
Scene B comprises four cations with +2 charge, and eight anions with -1 charge.
Hence, scene B is the best representation of this case.