CrO4^2- 4.13×10^(-3) M Ag^+ Ag2CrO4 precipitate

CrO4^2- 4.13×10^(-3) M Ag^+ Ag2CrO4 precipitate

 

 

4.13×10^(-3) M Ag^+ 용액으로부터

Ag2CrO4 침전이 시작될 때 CrO4^2-의 농도는?

 

 

What CrO4^2- concentration is required to

(a) initiate precipitation of Ag2CrO4

from a solution that is 4.13×10^(-3) M in Ag^+?

 

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> Ag2CrO4의 Ksp = 1.2×10^(-12)

 

 

 

Ag2CrO4(s) ⇌ 2Ag^+(aq) + CrO4^2-(aq)

 

Ksp = [Ag^+]^2 [CrO4^2-]

 

 

 

[CrO4^2-] = Ksp / [Ag^+]^2

= (1.2×10^(-12)) / (4.13×10^(-3))^2

= 7.035276×10^(-8)

= 7.04×10^(-8) M