Question

please help me

1. a. What is the molar solubility of Ag2SO4 (Ksp = 1.2 x 109) in water? b. How do you expect the solubility to change if the Ag2SO4 were in a 0.10M AgNO3 solution (increase, decrease, stay the same)? Why? C. Calculate the molar solubility of Ag2SO4 in 0.10M AgNO3. d. How do you expect the solubility to change if the Ag2SO4 were in a 0.10M HCl solution (increase, decrease, stay the same)? Why? Your explanation should include a reaction equation but you do NOT need to calculate the solubility. 2. A solution is prepared by mixing 100 OmL of 0.010M Pb(NO3)2 and 100.OmL of 0.0010M NaF. Will PbF2 precipitate? Ksp - 4x 10

Answer 1

y ay Kop= 1.2 x 10's Agasoy > 2 Agt + Soya Kap = [dag* J> [somos ] 1. 2x10% = (as)? x 5 pv 2x10-5 = 483 $? - 12x165 s = 0.3x105 so = 30x106 S = 1.44% 16 mol amit by Agnoz - Ag+ + NO3- l Aguson 7 2 Aght sogen 001 01 . lunuple) va elle sedlubility will derecer due to common ion effect the concenter of Agt ion invunne hence the equilibrum shift towards left (ocending to the Chatelic's Principle) dy figa soy = 2 mg + soyan HU Ht tu- The cubility to you The volubilite stays the came and no common son is there. 3

IMOIN c + Intial AgNO3 - Agt + NO3- op — 200* + soy - oil o oiltas s Kab - [8g* 3° [s042-] 1.2x105 - 1001+ 232 xs 1-2205 - (0:01+ 4s? + 0.45)s 1. 2. 3165 - (011+as)'s 001+ 25 0.1 asubility is very less 1-230-5 - (0.19 x 5 1. 2x105 = ools sa 1.2810S olol s = 1.2x10 3 M