Question

1a) Silver chromate, Ag₂CrO₄, has a K_sp of 8.99 × 10^–12. Calculate the solubility in mol/L of silver chromate.

1b) Calculate the molar solubility of AgCl (K_sp = 1.6 × 10^–10) in 0.0034 M sodium chloride at 25°C.

1c)

If 30 mL of 5.0 × 10^–4M Ca(NO₃)₂ are added to 70 mL of 2.0 × 10^–4M NaF, will a precipitate occur?

(K_sp of CaF₂ = 4.0 × 10^–11)

Answer 1

8.99*10-12. Aa crou is = 2 Age Carl + Crou (aq), Ksp = het Molas solubility of Ag Crou be a mole 2am tata - RM (Agt lag)] [Croy & laas)' - 8.998 10-12 [Ag Coog (1) / lachnity of pure is unity, selverchromate 12 xjy z 8.99x10-12 o 8,99x10-12 x? Bogs x 1944

Nal-309 810 7 0 14301 *10*4 meter дадла: у 1 6 «о, со тоа PO 1 (b) het solubility of Agce in 0.0034 M Nace be y mole Aguas from Nace e = Agt (as) tích laq, Kspololox1.6 Ab to 0.0034 Ab ta tq - 0.0034 tym T 010034M y X 0.0034 la 1,6X1-10 - y = 470.58 x10-10 y = 4.71x10-6 mol 10) some, 5X15 MM 70ml, &X10MM Ca QNO3)₂ + Naf Cafz (1) + Nano [Ca 2 + (Fog Cafe 70x2x1027 - 14 x10-15m . Cati Ca ²+ + 27%, (KSP) Cafe = 4X1011 = 305*10-4 100 No, Q = [ca?][f®) (15X10-9][14X100172 [Cafz13] → unity a 15x1964 1885 = 2.940x hrnce & eksed cat a Reaction proceeds in forward direction and thus no precipitate will occur.