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Ksp와 Q. PbCl2의 Ksp는 1.6×10^-5

by 영원파란 2019. 12. 17.

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KspQ. PbCl2Ksp1.6×10^-5

 

 

If you mix 10.0 mL of 0.0010 M Pb(NO3)2 with 5.0 mL of 0.015 M HCl, does PbCl2 precipitate?

(Ksp of PbCl2 = 1.6×10^-5)

 

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[Pb^2+] = 0.0010 × 10.0 / (10.0 + 5.0) = 0.0006667 M

[Cl^-] = 0.015 × 5.0 / (10.0 + 5.0) = 0.005 M

 

 

Q = [Pb^2+][Cl^-]^2

= (0.0006667) (0.005)^2

= 1.67×10^-8

 

 

Q < Ksp 이므로,

침전이 생성되지 않는다.

PbCl2 does not precipitate.

( 설명 https://ywpop.tistory.com/12527 )

 

 

 

[ 관련 예제 https://ywpop.tistory.com/12707 ] The Ksp for PbCl2 is 2.0×10^-5. Will a precipitate form when 0.050 mol Pb(NO3)2 and 0.010 mol NaCl are in 1.0 L solution? Show evidence for your answer.

 

 

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