Its an owl question so it is 3 parts. Thanks so much! In the laboratory you are
ID: 1046448 • Letter: I
Question
Its an owl question so it is 3 parts. Thanks so much!
In the laboratory you are given the task of separating Pb2+ and Cu2+ ions in aqueous solution.
For each reagent listed below indicate if it can be used to separate the ions. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No"
In the laboratory you are given the task of separating Pb2+ and Co2+ ions in aqueous solution.
For each reagent listed below indicate if it can be used to separate the ions. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No"
In the laboratory you are given the task of separating Ba2+ and Pb2+ ions in aqueous solution.
For each reagent listed below indicate if it can be used to separate the ions. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No"
Explanation / Answer
1.
Pb2+ and Cu2+
(a) KBr Yes PbBr2 ppt.
(b) KOH Yes Pb(OH)2 white ppt. and Cu(OH)2 blue ppt.
(c) Na2SO4 Yes PbSO4 white ppt.
2.
Pb2+ and Co2+
(a) HCl Yes PbCl2 white ppt.
(b) Na2SO4 Yes PbSO4 white ppt.
(c) KOH Yes Pb(OH)2 is white ppt. and Co(OH)2 is red rose ppt.
3.
Ba2+ and Pb2+
(a) KCl Yes PbCl2 white ppt.
(b) Na2SO4 NO Both form white ppt.
(c) Na2S Yes PbS balck ppt.
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