A solution of Na2CO3 is added dropwise to a solution that is 0.0172 M in Nd3+ and 2.34e-09 M in Hg22+. The Ksp of Nd2(CO3)3 is 1.08e-33. The Ksp of Hg2CO3 is 3.6e-17.
(a) What concentration of CO32- is necessary to begin precipitation? (Neglect volume changes.)
[CO32-] =
(c) What is the concentration of CO32-
when the second cation begins to precipitate?
[CO32-] = M.
Nd2(CO3)3 KsP=1.08e-33
KsP= [Nd3+][CO32-]
1.08e-33=0.0172 x [CO32-]
[CO32-]=62e-33
Ksp of Hg2CO3 is 3.6e-17
Hg2CO3=[Hg22+][CO32-]
3.6e-17=2.34e-09 x [CO32-]
[CO32-]=1.5e-08
There for precipitation will start to occur at [CO32-]= 62e-33 M.
second cation begins to precipitate at 1.5e-08 M
A solution of Na2CO3 is added dropwise to a solution that is 0.0172 M in Nd3+...
A solution of Na2CO3 is added dropwise to a solution that is 0.0852 M in Y3+ and 0.0413 M in Cd2+. The Ksp of Y2(CO3)3 is 1.03e-31. The Ksp of CdCO3 is 1e-12. (a) What concentration of CO32- is necessary to begin precipitation? (Neglect volume changes.) [CO32-] = M. (b) Which cation precipitates first? Y3+ Cd2+ (c) What is the concentration of CO32- when the second cation begins to precipitate? [CO32-] = M.
A solution of Na2CO3 is added dropwise to a solution that contains 1.00×10-2 M Fe2+ and 1.49×10-2 M Cd2+. What concentration of CO32- is need to initiate precipitation? Neglect any volume changes during the addition. Ksp value: FeCO3: 2.10*10-11 Ksp value: CdCO3: 1.80*10-14 Which cation precipitates first? What is the concentration of CO32- when the second cation begins to precipitate?
A solution of NaF is added dropwise to a solution that is 0.0343 M in Mg2+ and 1.48e-09 M in Y3+. The Ksp of MgF2 is 5.16e-11. The Ksp of YF3 is 8.62e-21. (a) What concentration of F- is necessary to begin precipitation? (Neglect volume changes.) [F-] = M. (b) Which cation precipitates first? Mg2+Y3+ (c) What is the concentration of F- when the second cation begins to precipitate? [F-] = M.
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A solution of Na3AsO4 is added dropwise to a solution that is 0.0600 M in Bi3+ and 3.43e-05 M in Cd2+. The Ksp of BiAsO4 is 4.43e-10. The Ksp of Cdz(AsO4)2 is 2.2e-33. (a) What concentration of AsO4 is necessary to begin precipitation? (Neglect volume changes.) [A5043-) = x M. (b) Which cation precipitates first? O Bi3+ Cd2+ (c) What is the concentration of As043- when the second cation begins to precipitate? [4504?] = * M.
A) A solution of Na2CO3 is added dropwise to a solution that contains 1.23×10−2 M Fe2+ and 1.59×10−2 M Cd2+. What concentration of CO32− is need to initiate precipitation? Neglect any volume changes during the addition. Answer is = [CO32−] = 1.13×10−12 M B) In the solution from Part A, what will the concentration of CO32− be at the moment before Fe2+ begins to precipitate?
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A solution of Na3AsO4 is added dropwise to a solution that is 0.0220 M in Cu2+ and 0.492 M in Ag+. The Ksp of Cu3(AsO4)2 is 7.95e-36. The Ksp of Ag3AsO4 is 1.03e-22. (a) What concentration of AsO43- is necessary to begin precipitation? (Neglect volume changes.) [AsO43-] = M. (b) Which cation precipitates first? Cu2+ Ag+ (c) What is the concentration of AsO43- when the second cation begins to precipitate? [AsO43-] = M.
A solution of Na3PO4 is added dropwise to a solution that is 0.0810 M in Ag+ and 0.00171 M in Cu2+. The Ksp of Ag3PO4 is 8.89e-17. The Ksp of Cu3(PO4)2 is 1.4e-37. (a) What concentration of PO43- is necessary to begin precipitation? (Neglect volume changes.) [PO43-] = M. (b) Which cation precipitates first? Ag+ Cu2+ (c) What is the concentration of PO43- when the second cation begins to precipitate? [PO43-] = M.