Question

Do. A saturated solution of AgaCroy contains o.o2aag of dissolved silver Chromate. a) calculate the molar concentrations of Agt and croy. b) Calculate ksp for Aga Croy At wts. Ag=108 cr=52 O=16

Answer 1

e o Answer: 0 moreg of Ag2 croq = man malormes = 0.0222 g 332g mer - 6.6867810-Sma n soubility of Agecroq = 6.6867x10-sm Now Ag20704() = 2 Agt aa) + croq? tag) a) [ Agt] = 2x [Ag22004] = 2x 6.687x10-5 mel l-! = 1.34 x 10-4m th [crog 2-] = [Agzcran - 6.6867x10-5m 6 KSP= [Agt 2 (crog 2-] o = (1.34 x 10-4)² x (6.687x10-51 - 1.2x10-12 lanseal Оо ека Без ка = log (18x10 5) 24,74 pH= pka & leg (NaC2M302] [HC2M302] - 4.74 + log oss = 4.83 (answer) 0.45 (6) moles of [NaC₂43 02] a = = [202] = = Naoh added 0.050 mel volceme (L) x melaniny (mel (1) 0.3 LX o.ssm 0.165m 0.3L40.95m 0.135 m

NGOM +H2O NaOH + I o.oso ci - 0.050 C2M302 0.135 -0.050 0.065 MacMzO2 0.16S to.oso 0.215 он, Ра + Chia C243 02] cco H4000 = 4.74 + 10g 8.215 = 5:14 lauseva