Published by:
CGP EDU Academic Team
Published on: August 13, 2026
If the K sp of CaF 2 at 25ºC is 1.6 × 10 –10 , then the number of moles of the salt must be dissolved in 2.0 L of water at 25ºC to form a saturated solution is :
Text Solution
Verified by ExpertsThe correct answer is:
C
CaF 2 
Ca 2+ (s) + 2F – (2s)
K sp = 4s 3
1.6 × 10 –10 = 4s 3
= s
(4 × 10 –11 ) 1/3 = s
3.4 × 10 –4 = M
mole of salt = 3.4 × 10 –4 × 2 = 6.8 × 10 –4 .
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