Assertion. On mixing 500mL of 10^(-6) M Ca^(-6) M Ca^(2+)ion and 500 mL of 10^(-6) M F^(-1) ion, the precipitate of CaF_(2) will be obtained. K_(sp)(CaF_(2))=10^(-18). Reason. If K_(sp)is greater than ionic product, a precipitate will develop.

Assertion. On mixing 500mL of 10^(-6) M Ca^(-6) M Ca^(2+)ion and 500 m

1.	Assertion. On mixing 500mL of 10^(-6) M Ca^(-6) M Ca^(2+)ion and 500 mL of 10^(-6) M F^(-1) ion, the precipitate of CaF_(2) will be obtained. K_(sp)(CaF_(2))=10^(-18). Reason. If K_(sp)is greater than ionic product, a precipitate will develop.
Answer» If both ASSERTION and REASON are true, and reason is the true explanation of the assertion. If both assertion and reason are true, but reason is not the true explanation of the assertion. If aasertion is true, but reason is false. If both assertion and reason are false. Solution :Correct A. `CaF_(2) hArr Ca^(2+) + 2 F^(-)`, Ionic product `=((10^(-6))/(2))((10^(_6))/(2))^(2) = 1.25 xx 10^(-19)` which is less than `K_(sp)` . Hence, no precipitate will develop. Correct R. If ionic product is greater than `K_(sp)`, a precipitate will develop.