Exhibit 14-7 Consider Dissolving LaF 3 in Water as Shown

question 130

Multiple Choice

Exhibit 14-7 Consider dissolving LaF 3 in water as shown below to answer the following question(s) :
LaF₃ (s) La ³⁺ (aq) + 3 F - (aq) K sp = 2.0*10^{- 19}
-Refer to Exhibit 14-7. The solubility product constant for LaF₃ is 2.0*10^{- 19} . Which expression listed below would be used to solve for the molar solubility of LaF 3 in water?

• A) 2.0×10 ^{- 19} = x⁴
• B) 2.0×10 ^{- 19} = 3x²
• C) 2.0×10 ^{- 19} = 3x⁴
• D) 2.0×10 ^{- 19} = 4x⁴
• E) 2.0×10 ^{- 19} = 27x⁴

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