Common ion effect and precipitation

27 questions on Common ion effect and precipitation from the Ionic Equilibrium I chapter: 5 NEET level, 11 JEE Main, 11 JEE Advanced. Each one opens with its answer and solution.

• Solid NaCl is added to a saturated solution of AgCl at constant temperature. Which statement is correct? NEET level
• A precipitate of a sparingly soluble salt AB forms from solution when NEET level
• Using K_sp(AgCl) = 1.8 x 10^-10, the solubility of AgCl in 0.1 M NaCl solution (in mol L^-1) is approximately NEET level
• Addition of sodium acetate to a solution of acetic acid NEET level
• Assuming ideal behaviour, in which of the following will AgCl be least soluble? NEET level
• K_sp of PbSO4 is 1.6 x 10^-8. Its solubility in 0.04 M Na2SO4 solution (in mol L^-1) is approximately JEE Main level
• 50 mL of 2.0 x 10^-3 M Pb(NO3)2 is mixed with 50 mL of 4.0 x 10^-3 M KI. Given K_sp(PbI2) = 8.0 x 10^-9, the correct conclusion is JEE Main level
• Solid NaCl is added gradually (no volume change) to 0.002 M AgNO3. Given K_sp(AgCl) = 1.8 x 10^-10, precipitation just begins when [Cl^-] (in mol L^-1) reaches JEE Main level
• K_sp of PbF2 is 3.6 x 10^-8. Its solubility in 0.1 M Pb(NO3)2 solution (in mol L^-1), neglecting s compared with 0.1, is JEE Main level
• Solid AgNO3 is added slowly to a solution that is 0.01 M in both Cl^- and I^-. K_sp: AgCl = 1.8 x 10^-10, AgI = 8.3 x 10^-17. When AgCl just starts to precipita... JEE Main level
• Solid AgNO3 is added to 0.005 M K2CrO4 (no volume change). With K_sp(Ag2CrO4) = 2.0 x 10^-12, Ag2CrO4 starts to precipitate when [Ag^+] (in mol L^-1) reaches JEE Main level
• A solution contains 0.01 M Mn^2+. Given K_sp(Mn(OH)2) = 4.0 x 10^-12 and log 2 = 0.301, the pH at which Mn(OH)2 just begins to precipitate is closest to JEE Main level
• K_sp of PbI2 is 6.4 x 10^-9. Calculate its solubility in 0.02 M KI solution, in units of 10^-6 mol L^-1 (nearest integer; take [I^-] = 0.02 M). JEE Main level
• 50 mL of 0.01 M AgNO3 is mixed with 50 mL of 0.02 M NaCl. Taking K_sp(AgCl) = 1.7 x 10^-10 and assuming precipitation is essentially complete, find the equilibr... JEE Main level
• Equal volumes of AgNO3 and NaCl solutions are mixed. With K_sp(AgCl) = 1.8 x 10^-10, in which cases does a precipitate form? JEE Main level
• A saturated solution of Mg(OH)2 (K_sp = 1.6 x 10^-11) with excess solid is at 298 K. Choose the correct statement(s). JEE Main level
• AgNO3 is added gradually to a solution containing 0.010 M Cl^- and 0.010 M CrO4^2-. K_sp: AgCl = 1.8 x 10^-10, Ag2CrO4 = 2.0 x 10^-12. When Ag2CrO4 just begins ... JEE Advanced level
• M^2+ (0.10 M) is to be removed from solution as M(OH)2 (K_sp = 2.5 x 10^-13) until only 0.1% of it remains. Using log 5 = 0.699, the minimum pH required is clos... JEE Advanced level
• A sparingly soluble salt AB has K_sp = 1.0 x 10^-5. It is dissolved in 0.002 M NaA solution (fully dissociated). Solving without neglecting any term, its solubi... JEE Advanced level
• 100 mL of 0.04 M MgCl2 is mixed with 100 mL of 0.20 M aqueous NH3 (K_b = 1.8 x 10^-5). Taking K_sp(Mg(OH)2) = 1.6 x 10^-11 and neglecting any Mg(OH)_2 formed wh... JEE Advanced level
• A solution is 0.010 M in Mg^2+ and 0.10 M in NH3 (K_b = 1.8 x 10^-5). K_sp(Mg(OH)2) = 1.6 x 10^-11. Find the minimum mass of solid NH4Cl (molar mass 53.5 g mol^... JEE Advanced level
• AgNO3 is added gradually to a solution that is 0.050 M in Cl^- and 0.020 M in CrO4^2-. With K_sp(AgCl) = 1.8 x 10^-10 and K_sp(Ag2CrO4) = 2.0 x 10^-12, find the... JEE Advanced level
• K_sp of Cr(OH)3 is 2.7 x 10^-31. A solution contains 1.0 x 10^-3 M Cr^3+. Taking log 3 = 0.477, calculate the pH at which Cr(OH)3 just starts to precipitate (tw... JEE Advanced level
• AgNO3 is added gradually to a solution containing 0.010 M each of Cl^-, Br^- and I^-. K_sp: AgCl = 1.8 x 10^-10, AgBr = 5.0 x 10^-13, AgI = 8.0 x 10^-17. Choose... JEE Advanced level
• A solution contains 0.010 M Mg^2+ (K_sp of Mg(OH)2 = 1.6 x 10^-11; take log 2 = 0.301) at 298 K. Choose the correct statement(s). JEE Advanced level
• Using K_sp(AgCl) = 1.8 x 10^-10 and ignoring interionic effects, choose the correct statement(s) about the solubility of AgCl. JEE Advanced level
• Equal volumes of AgNO3 (conc. a) and K2CrO4 (conc. b) are mixed. K_sp(Ag2CrO4) = 1.1 x 10^-12. Choose the correct statement(s). JEE Advanced level