Calculate the molar solubility of barium fluoride in each of the following. Part

Question

Calculate the molar solubility of barium fluoride in each of the following.

Part A

pure water

Express your answer using three significant figures.

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Part B

0.12 M Ba(NO3)2

Express your answer using two significant figures.

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Part C

0.15 M NaF

Express your answer using two significant figures.

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Calculate the molar solubility of barium fluoride in each of the following.

Part A

pure water

Express your answer using three significant figures.

S =   M  

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Part B

0.12 M Ba(NO3)2

Express your answer using two significant figures.

S =   M  

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Part C

0.15 M NaF

Express your answer using two significant figures.

S =   M  

Submit

Explanation / Answer

BaF2 = 1.84 x 10-7

then

in pure water

KSp = [Ba+2][F-]^2

1.84 x 10-7 = (S)(2S)^2

4S^3 = 1.84 x 10-7

S = 0.00358 M

B)

When 0.12 M Ba(NO3)2

Then

KSp = [Ba+2][F-]^2

1.84 x 10-7 = (0.12)(2S)^2

S = 6.19*10^-4 M

C)

0.15 M NaF

KSp = [Ba+2][F-]^2

1.84 x 10-7 = (S)(0.15)^2

S = 8.17*10^-6 M

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