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

Question 193

Multiple Choice

Exhibit 14-7 Consider dissolving LaF 3 in water as shown below to answer the following question(s) :
LaF3 (s) Exhibit 14-7 Consider dissolving LaF 3 in water as shown below to answer the following question(s) : LaF<sub>3</sub> (s)    La <sup>3+</sup> (aq)  + 3 F - (aq)  K sp = 2.0*10<sup>- 19 </sup> -Refer to Exhibit 14-7. The solubility product constant for LaF<sub>3</sub> is 2.0*10<sup>- 19 </sup> . Which expression listed below would be used to solve for the molar solubility of LaF 3 in water? A)  2.0×10<sup> - 19</sup> = x<sup>4</sup> B)  2.0×10<sup> - 19</sup> = 3x<sup>2</sup> C)  2.0×10<sup> - 19</sup> = 3x<sup>4</sup> D)  2.0×10<sup> - 19</sup> = 4x<sup>4</sup> E)  2.0×10<sup> - 19</sup> = 27x<sup>4</sup> 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

Correct Answer:

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