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In: Chemistry

Q1Ksp(CaF2)=3.9*10-11. What is the concentration of [F-] in equilibrium with solid CaF2? 0.00043m, 0.00027m, 0.00054m, 0.0021m...

Q1Ksp(CaF2)=3.9*10-11. What is the concentration of [F-] in equilibrium with solid CaF2?

0.00043m, 0.00027m, 0.00054m, 0.0021m

Q2The Ksp of silver acetate (Ag(H3C2O2)) is 2.0*10-3. What is the concentration of Ag+ in equilibrium with solid silver acetate in a solution that also contains 1.0M sodium acetate? Answer in molarity (M).

Do NOT use scientific notation!

Expert Solution

CaF2 --------> Ca⁺² + 2F^-

s 2s

Ksp = [Ca⁺²][F-]²

= s*(2s)²

= 4s³

3.9*10^-11 = 4s³

s³ = 9.75*10^-12

s = 2.136*10^-4 M

[F-] = 2*s = 2*2.136*10^-4

[F-] = 0.00043M

Q2 (Ag(H3C2O2)) -------> Ag⁺ + H3C2O2^-

Ksp = [ Ag⁺][ H3C2O2^-]

2*10^-3 =[Ag+] 0.1

[Ag+] = 2*10^-2 M = 0.02M

queen_honey_blossom answered 2 years ago

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