Question

15) Determine the molar solubility of FeCl, in pure water. K A) 0.228 M B ) 0.0301 M C) 0.311 M for FeCl, -2.45 x 10 D ) 0.174 M 15 E) 2.45 * 10M 16) 16) Which of the following statements is true? A) Kris related to the formation of complexes B) K is related to acid dissociation C) K, is related to the solubility of a solid ionic species D) Khis related to base dissociation E) K is related to the solubility of gases 17) A solution containing AgNO, is mixed with a solution of LiCl to form a solution that is 8.85 x 10 Min Ag and 2.00 x 10 Min Cl. What will happen once these solutions are mixed? The Kp of AgCl(s) is 1.78 x 10 and LINO, is far more soluble A) Nothing will happen because K > Q for AgCl. B) Nothing will happen because Kp <Q for AgCl. C) A precipitate will form since Q> K, for AgCl. D) A precipitate will form since Q<K for AgCl. E) Nothing will happen because K -Q and the system is saturated IS) 18) Consider the following reaction: CO2(g) + C(s graphite) - 2 CO(g) Kp -2.25 A reaction mixture initially contains 0.82 atm COX, 50 mol of graphite, and nothing else in de container. Determine the equilibrium pressure of CO A) 0.45 atm B) 0.37 atm C) 0.57 atm D) 0.91 atm E) 1.36 atm 19) C) H,PO. D) H0 E) HPO. 20) wallowing titration curve indicates a titration between what kinds of substances? 19) What is the conjugate base of HPO?? A) HPO B) PO, 20) The following titratio A) diprotic acid with a strong base B) weak monoprotic acid with a strong base C) strong monoprotic acid with a strong base D) weak base with a strong acid E) weak base with a strong base 40 50 10 20 30 Volume (ml) 21) (bonus) What contributed to the corrosivity of the water in Flint, Michigan? A) Ducks and fish pooping in the river, and road salt B) The large Kp of PbCl2 C) Removing halomethanes during water treatment D) Phosphate not being added to the water E) all of the above 21)

Answer 1

Answer:-

These questions are answered by using simple concept of ionic equilibrium which involves the solubility and ionisation of salts.

The answer is given in the image,

Anjulho 15 ) Fedzisi 3 + 3d tipp = let/?se-?. 245X102= (5) (35) 2.45x102=2784 54= 9.07X10-4 5:0.174M 0 0.174M is correct answer 16. A) ke is related to the formation 9 complorado 14. Ospa[agt][ce")= 8.85*10*6* 2-808/5 Osp= 1-77x10-10 Ksp = 1078 x10-10 A Nothing will happen because pe 2009) 160-2.25 18. CO2007+ Ces esprits 0.82 2x 0.82-2 kp (Prod? Poor 225=(27) 0.82-8 1.845-2-252 = 4x2 472 +2,252.-1.845 =0 2= -2.25 + 12.25)+ 4x9x1,845 2x4

X = -2.25 +5.881 2x4 x=0.454 PCon 20.82-0.454 50-37 atm. B) 0.37 atm is correct answees. 19. B)-P003- 20. 4) streng meroproti ned with a Strong base 21. B) The largekspo Pbela