Lead thiocyanate, Pb(SCN)2, has a Ksp value of 2.00×10?5. Part A Part complete Calculate the molar solubility of lead thiocyanate in pure water. The molar solubility is the maximum amount of lead thiocyanate the solution can hold. Express your answer with the appropriate units. View Available Hint(s)
1.71×10?2 M Previous Answers Correct
Common-Ion Effect Consider the dissolution of AB(s) : AB(s)?A+(aq)+B?(aq) Le Châtelier's principle tells us that an increase in either [A+] or [B?] will shift this equilibrium to the left, reducing the solubility of AB. In other words, AB is more soluble in pure water than in a solution that already contains A+ or B? ions. This is an example of the common-ion effect.
Part B Calculate the molar solubility of lead thiocyanate in 0.900 M KSCN. Express your answer with the appropriate units. View Available Hint(s) 8{\cdot}10^{-6} M
Pb(SCN)2 ------- Pb(2+) + 2SCN-
s 0 0
0 s 2s
Ksp =[Pb(+2)][SCN(-)]^2 = 2.00 * 10^(-5)
4s^3 = 2.00 * 10^(-5)
s^3 = 5 * 10^(-6)
s = (5)^(1/3) * 10^(-2) = 1.71 * 10^(-2)
For part B
Pb(SCN)2 ------- Pb(2+) + 2SCN-
s 0 1.80
0 s 1.80+2s
Ksp =[Pb(+2)][SCN(-)]^2 = 2.00 * 10^(-5)
s(1.80+2s)^2 = 2.00 * 10^(-5)
solving the equating we get
x = 6.17 * 10^(-6)M
Lead thiocyanate, Pb(SCN)2, has a Ksp value of 2.00×10?5. Part A Part complete Calculate the molar...
Lead thiocyanate, Pb(SCN)2, has a Ksp value of 2.00×10−5. a) Calculate the molar solubility of lead thiocyanate in pure water. The molar solubility is the maximum amount of lead thiocyanate the solution can hold. b) Calculate the molar solubility of lead thiocyanate in 0.500 M KSCN.
HW : Ch 17 Part 2 (Butters, Titrations, Solubility &Complex lons) -3.4hrs)(52 credits Common-lon Effect on Solubility for Lead Thiocyanate 7 of 27 Review Constants Periodic Table Lead thiocyarate, Pb(SCN), has a 2.00 x 10-5 value of Part A Calculate the molar solubility of lead thiocyanate in pure water. The molar solby is the maximum amount of lead thiocyanate the solution can hold Express your answer with the appropriate units. View Available Hints) Value Units Submit Common on Effect Consider...
The common ion effect can be applied to a solution of lead thiocyanate when potassium thiocyanate is added. Since there is a common ion, the cyanate ion, the molar solubility of lead thiocyanate goes down in the presence of potassium thiocyanate Calculate the molar solubility of lead thiocyanate in 0.500 M KSCN Express your answer with the appropriate units. Lead thiocyanate, Pb(SCN)2, has a Ksp value of 2.00 x 10 5
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