Calculate Osp for calcium fluoride (Ksp = 3.9 x10-11) when 155.0 ml. of a 5.75x10-3 M solution of Ca(NO3)2 is added to 310.0 mL of a 6.90x103 Msolution of KF.
Ca(NO3) -------> Ca2+ + 2 NO3-
Hence, [Ca2+] = (0.155 x 5.75 x 10-3) / (0.155 + 0.310) = 0.0019167 M
KF ----------> K+ + F-
[F-] = (0.31 x 6.9 x 10-3) / (0.155 + 0.310) = 0.0046 M
CaF2 ---> Ca2+ + 2F-
Therefore, Qsp for calcium fluoride (CaF2) is given by:
Qsp = [Ca2+]. [F-]2
Qsp = (0.0019167 M) x (0.0046)2
∴ Qsp = 4.056 x 10-8
Calculate Osp for calcium fluoride (Ksp = 3.9 x10-11) when 155.0 ml.
Calculate Osp for calcium fluoride (Ksp = 3.9 x10-11) when 220.0 mL of a 6.70x10-3 M solution of Ca(NO3)2 is added to 225.0 mL of a 6.75x10-3 Msolution of KF.
Calculate Qsp for calcium fluoride (Ksp = 3.9 ×10–11) when 140.0 mL of a 5.10×10-3 M solution of Ca(NO3)2 is added to 180.0 mL of a 7.70×10-3 M solution of KF.
Calculate Qsp for calcium fluoride (Ksp = 3.9 ×10–11) when 175.0 mL of a 6.00×10-3 M solution of Ca(NO3)2 is added to 335.0 mL of a 7.10×10-3 M solution of KF.
Calculate Qsp for calcium fluoride (Ksp = 3.9 ×10–11) when 140.0 mL of a 6.90×10-3 M solution of Ca(NO3)2 is added to 255.0 mL of a 7.55×10-3 M solution of KF.
Calculate Qsp for calcium fluoride (Ksp = 3.9x10-11) when 100.0 mL of a 6.05x103 M solution of Ca(NO3)2 is added to 275.0 mL of a 6.50x10 Msolution of KF.
Calculate Qsp for calcium fluoride (Ksp = 3.9 ×10–11) when 125.0 mL of a 5.35×10-3M solution of Ca(NO3)2 is added to 235.0 mL of a 7.00×10-3M solution of KF.
Calculate Qsp for calcium fluoride (Ksp= 3.9x10^-11) when 160.0 mL of a .00565 M solution of Ca(NO3)2 is added to 190.0 mL of a .00650 M solution of KF.
Calculate Qsp for calcium fluoride (Ksp = 3.90 times10^-11) when 220.0 mL of a 0.00645 M solution of Ca(NO_3)_2 is added to 150.0 mL of a 0.00540 M solution of KF.
7. Will calcium fluoride (Ksp 5.3 x 10") precipitate when 200 mL of a 4.50 x 10' M solution of Ca(NO,), is added to a 0.170 L solution of 2.5 x 10 M solution of KF? Ca(NO), + 2KF → 2KNO, + CaF2
Calcium fluoride, CaF2, is an insoluble salt (Ksp = 1.46 x 10-10) that can be formed by precipitation by mixing solutions of calcium nitrate and sodium fluoride. Suppose 200.0 mL of a 0.600 M Ca(NO3)2(aq) solution are mixed with 400.0 mL of a 0.0600 M NaF(aq) solution. Will a precipitate form? How much calcium fluoride could form?