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Calcium fluoride (CaF2) has a solubility constant of 3.45 x 10-11 . What is the molar solubility of CaF2 in water? 4.15 x 10-6 M 5.87 x 10-6 M 2.05 x 10-4 M 3.26 x 10-4 M
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Dec 3, 2018
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Calcium fluoride (CaF2) has a solubility constant of 3.45 x 10-11
. What is the molar solubility of CaF2 in water?
4.15 x 10-6 M
5.87 x 10-6 M
2.05 x 10-4 M
3.26 x 10-4 M
Chemistry
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Stefan Blamberg
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Stefan Blamberg
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Ksp=3.45×10⁻¹¹
CaF₂(s) ⇄ Ca²⁺(aq) + 2F⁻(aq)
Ksp=[Ca²⁺][F⁻]²
[Ca²⁺]=C(CaF₂)
[F⁻]=2C(CaF₂)
Ksp=4{C(CaF₂)}³
C(CaF₂)=∛(Ksp/4)
C(CaF₂)=∛(3.45×10⁻¹¹/4)=2.05×10⁻⁴ mol/L
2.05×10⁻⁴ M
Malgi
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Dec 8, 2018
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Malgi
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