JEE Main levelOne or more correct optionsDifficulty 2 of 3ie197
Three sparingly soluble salts AB, ABX2 and ABX3 each have molar solubility 1.0×10−4molL−1. Choose the correct statement(s).
AKsp(AB)>Ksp(ABX2)
BKsp(ABX3)=2.7×10−15
CKsp(ABX2)=2.0×10−12
DKsp(ABX2)=Ksp(ABX3)
Answer: A, B
Ksp(AB)=s2=1.0×10−8, Ksp(ABX2)=4s3=4.0×10−12 and Ksp(ABX3)=27s4=2.7×10−15. So the first two statements are true; the ABX2 value quoted in the third is half the correct one, and the fourth is false.