Posted by Ashlee on Monday, October 29, 2012 at 8:35pm.
...........CaF2(s) ==> Ca^2+ + 2F^-
I..........solid........0.......0
C..........solid........x.......2x
E..........solid........x.......2x
Ksp = (Ca^2+)(F^-)^2
Substitute from the ICE chart and solve for x. The question asks for solubility of CaF2. You will calculate x = (Ca^2+) in moles/L but since 1 mol CaF2 dissolves to give 1 mol Ca&2+, then x is also solubility CaF2.
If NaF is added to the solution what happens? Remember Le Chatelier's Principle which says that a system at equilibrium will try to undo what we do to it. So if we add F^-, the reaction will try to get rid of it. How can it do that. Only one way. That's by shifting to the left so that the solubility of CaF2 is decreased.
If we make the (F^-) = 0.1 M, then
Ksp = (Ca^2+)(F^-)^2
Ksp = (x)(0.1).
Solver for x.
what is the name for CaF2 in chemistry?
Related Questions
Chemistry - Given a saturated solution of CaF2, write the ionic equilibrium and ...
Chemistry - What is the molar solubility of CaF2 if o,1o mol of NaF are added to...
chemistry - What is the solubility of CaF2 in a buffer solution containing .30 M...
Chemistry 114 - Write down the Ksp expression for CaF2. If the molar solubility ...
Chemistry - Consider a saturated solution of calcium fluoride in 0.086 M ...
Chemistry HELP ME!!!! - A sloution of calcium nitrate, C(NO3), reacts with a ...
Chemistry 120 - A sloution of calcium nitrate, C(NO3), reacts with a solution of...
chem/solubility - the Ksp of CaF2 = 1.46*10^-10 and Ka of HF = 3.5*10^-4 ...
chemistry - The mineral CaF2 has a solubility of 2.1 x 10^-4 M. What is the Ksp ...
Chemistry - 1.) Hydrogen fluoride (HF) is a weak acid, which when dissolved in ...
For Further Reading
