The Ksp for BaF2 is 2.4 x 10-5. When 10 mL of 0.01 M NaF is mixed with 10 mL of

Question

The Ksp for BaF2 is 2.4 x 10-5. When 10 mL of 0.01 M NaF is mixed with 10 mL of 0.01 M Ba(NO3)2, will a precipitate form?


A. No, because Q is 1 x 10-12 and since it is less than Ksp no precipitate will form.
B. Yes, because Q is 1 x 10-12 and since it is less than Ksp a precipitate will form.
C. No, because Q is 1.25 x 10-7 and since it is less than Ksp no precipitate will form.
D. Yes, because Q is 1.25 x 10-7 and since it is less than Ksp a precipitate will form.
E. none of these

Please show and explain how you got the answer

Explanation / Answer

solubility of NaF=Molarity*volume(in l) =10^-4 solubillity of Ba(NO3)2=10^-4 therefore on reaction 10^-4 moles of BaF2 forms Q=4s^3=4*(10^-4)^3=4*10^-12

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