For each of the salts on the left, match the salts on the right that can be comp

Question

For each of the salts on the left, match the salts on the right that can be compared directly, using Kp values, to estimate solubilities. If more than one salt on the right can be directly compared, include all the relevant salts by writing your answer as a string of characters without punctuation, e g, ABC.) A. Cu(OH02 zinc sulfide calcium fluoride c. PbCO. D. Ag3PO4 White the expression for K in tems of the solubility, s, for each salt, when dissolved in water zinc sulfide calcium fluoride Note Miltplyot mmber and put itfrstinthe Ep expression Combine alexponents for s 6 more group attempts remaining Retry Entire Group

Explanation / Answer

1 C

i.e) ZnS = PbCO3

ZnS(s)    Zn2+(aq)   + S2-(aq)

Ksp=[ Zn2+]   [ S2-]=S^2

Pb (CO3) Pb 2+(aq)   + CO3 2-(aq)

Ksp=[ Pb2+]   [ CO32-]= S^2

2 A

i.e)CaF2 = Cu (OH)2

CaF2(s)    Ca2+(aq)   + 2 F -(aq)

Ksp=[ Ca2+]   [ F-]2 = 4S^3

Cu (OH)2(s)    Cu2+(aq)   + 2 OH -(aq)

Ksp=[ Cu2+]   [ OH-]2 = 4S^3

Second part

1 A

CaF2 = Co(OH)2

Ksp= 4S^3

2 BC

NiS = CaSO4 , CuCO3

Ksp= S^2

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