# Chemistry

posted by .

If the solubility of CaF2 (s) in water is 5.0 x 10^-3. The solubility will be
A. The same in 0.10 M NaF
B. less than 0.10 M NaF
C. Higher in 0.10 M NaF
D.None of the above

• Chemistry -

Why can't you use the same screen name. It takes longer to answer when we must surf through different names. At least you're consistent;ie., I see all of the names start with the letter M.
........CaF2 ==> Ca^2+ + 2F^-
Ksp = (Ca^2+)(F^-)^2 = 5E-3

Then NaF --> Na^+ + F^-
Note NaF is 100^ ionized and 0.1M NaF gives 0.1M Na^+ and 0.1M F^-. So F^- is a common ion, that will increase F^- in the CaF2 equilibrium, the reaction will shift to the left and ........

## Similar Questions

1. ### Chemistry

What is the molar solubility of CaF2 if o,1o mol of NaF are added to 1.0L of a saturated solution of CaF2?
2. ### Chemisty

The solubility of sodium floride, NaF, is 4.06 g NaF/100 g H2O at 20ÂșC. What mass of NaF would you have to dissolve in 1000 g H2O to make a saturated solution?
3. ### chemistry

Of the following solutions, which has the greatest buffering capacity?
4. ### chemistry

Which of the following mixtures would made the most effective buffer?
5. ### chemistry

How do you know when something has greater/smaller capacity?
6. ### chemistry

the solubility of BaF2 is 6.29x10^-3M and the solubility of barium fluoride in 0.15M NaF is 4.4x10^-5M. Compare the solubility and explain?
7. ### college chemistry

what is the molarity of NaF in the final solution if a solution was prepared by mixing 35.0mL of 0.200M NaF with 28.5mL of 0.350M NaF
8. ### chemistry

Given a saturated solution of CaF2, write the ionic equilibrium and use it to calculate the solubility of CaF2. My answers for the ionic equation and ksp values are CaF2(s)<->Ca2+(aq)+ 2F-(aq) Ksp= [Ca2+][F-]2 ksp=2.02*10^-4 …
9. ### Chemistry

An unknown salt is either NaF, NaCl or NaOCl when 0.050 moles of the salt is dissolved in water to form 0.500 L of solution, the pH of the solution is 8.08?
10. ### Chemistry

What volumes of 0.47 M HF and 0.47 M NaF must be mixed to prepare 1.00 L of a solution buffered at pH = 3.50?

More Similar Questions