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Ksp Ag2CrO4 = 1 × 10^ -12
Konsentrasi Ion Kromat (CrO4²-) = 1 × 10^ -4 mol/L
Ditanya : Konsentrasi ion Ag+ yg dapat larut ?
Jawab :
Reaksi :
Ag2CrO4 <---> 2Ag+ + CrO4²-
_____s__________2s_________s
• Konsentrasi ion Ag+ :
Ksp = [ Ag+ ]² [ CrO4²- ]
[Ag+]² = Ksp / [ CrO4²- ]
[Ag+]² = 1 × 10^ -12 / 1 × 10^ -4
[Ag+] = √ (1 × 10^ -8 )
[Ag+] = 1 × 10^ -4
1 x 10⁻¹² = [Ag⁺]² [1 x 10⁻⁴]
[Ag⁺] = 10⁻⁴ mol/L