미해결 질문
Provide the net ionic equation that occurs when the following aqueous compounds are mixed together:
Copper (II) Bromide and Lithium Hydroxide
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Complete Ionic Equations
Multiple Choice
Which of the following reagents could be used to separate the two cations from a solution containing Lead (IV) acetate and cesium permanganate?
A
Sr(NO3)2
B
TiC2H3O2
C
K2S
D
NaClO4
E
KNO3
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검증된 단계별 안내1
Identify the cations present in the solution: Lead (IV) (Pb^4+) and Cesium (Cs^+).
Consider the solubility rules for common ionic compounds. Lead (IV) sulfide (PbS) is insoluble in water, while cesium compounds are generally soluble.
Recognize that adding a sulfide ion (S^2-) to the solution can precipitate lead as lead sulfide (PbS), effectively separating it from cesium.
Evaluate the reagents provided: K2S contains sulfide ions, which can react with Pb^4+ to form insoluble PbS, thus separating the cations.
Conclude that K2S is the appropriate reagent to separate lead (IV) from cesium in the solution by forming a precipitate with lead.
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