What is the pH of a buffered solution saturated with hydrogen sulfide ([H2S] = 0.10 M) at 25°C if PbS (s) is precipitated, leaving [Pb2+] = 1.0 × 10–7 M, without precipitating any MnS (s)? The original solution is 0.030 M in both Pb2+ (aq) and Mn2+ (aq). Ksp = 8.0 × 10–28 M2 for PbS (s),Ksp = 2.5 × 10–13 M2 for MnS (s), and
Select one:
a. 0.03
b. 2
c. 0.4
d. 7
What is the pH of a buffered solution saturated with hydrogensulfide ([H2S] = 0.10 M)...
A precipitate forms when a solution that is 0.10 M in Cu2+, Pb2+, and Ni2+ is saturated with H2S and adjusted to pH = 1. What sulfides are present in the precipitate? [H2S] = 0.10 M; for H2S, Ka1 ´ Ka2 = 1.1 ´ 10–24 Ksp: CuS = 8.5 ´ 10–45, PbS = 7.0 ´ 10–29, NiS = 3.0 ´ 10–21 (The answer is D, Could anyone explain it by steps?) A) CuS, PbS, and NiS B) PbS and NiS...
A 1.0 L solution of 0.30 M in H3O+(aq) containing Mn2+(aq), Cd2+(aq), and Fe2+(aq), all at 0.010 M, was saturated with H2S(g) at room temperature. Assume that the pH of the solution remains constant and that the [H2S]sat = 0.10 M. The Ksp for MnS9S) is 2.5 x 10-13 , Ksp for CdS(s) is 8.0 x 10 -27 and Ksp for FeS(s) is 6.3 x10-18 . For H2S:Ka1=1.3 x 10-7. Ka2=8.5 x 10-14. Calculate the equilibrium concentrations of Mn2+(aq),Cd2+(aq), and...
1. What ions can be found in a saturated solution of Caco? The saturated solution of Ca CO₂ tochd that culcrmccartron and Carborate clos) son is as follows CaCO₃(aq)-> (a + cual tozcaada Asso Saturated solither ofcacą has cat and coz 2. What is the K, expression for a saturated solution of Ca,(PO)? (a3(PO4)2 ₃ 3 cat? tz Pou3 35 25 KSP=35] [25]? = 2753x452 - Ksp = 108 55 3. What is the K expression for a solution of...
21. What is the molar solubility of Mn(OH)2(s) in a solution that is buffered at pH 8.00 at 25 °C? The Ksp of Mn(OH)2 is 1.9 x 10- at 25 °C. The concentration of Pb in an aqueous solution is 5.5 x 103 M. What concentration of SO required to begin precipitating PbSO? The Ksp of PbSOa is 2.5 x 10 is 22. must be added to 1,0 L of 0.0180 M Pb2 (aq) to 23. What mass of KCl...
Calculate the pH of a 0.982 M solution of hydrogen sulfide (H2S) Where: H2S (aq) -> H+ (aq) + HS- (aq) Ka1 = 1.0 x 10-7 HS- (aq) -> H+ (aq) + S2- (aq) Ka2 = 1.0 x 10-19 Enter your answer with at least 2 sig figs.
answer all parts (a and b) please! Hydrogen sulfide (H2S) is a diprotic weak acid which can be used to selectively precipitate metal sulfide compounds from solution. The two deprotonation reactions of hydrogen sulfide are provided below along with their respective acid dissociation constants. H2S(ag) + H2O7) = HS (an) + H30+(aq) Kal = 1.0 * 10-7 HS (aq) + H2O) = 52 (ag) + H30 (29) K22=1 * 10-19 Imagine you have an aqueous solution buffered at pH 3...
Precipitation question. A mixture contains 1.0 x 10^-3 M Cu2+ and 1.0 x 10^-3 Mn2+ and is saturated with 0.10 H2S. Determine a pH where CuS precipitates but MnS does not precipitate. Ksp for CuS is 8.5 x 10^-45, and Ksp for MnS is 2.3 x 10^-13. Ka1 of H2S is 8.9 x 10^-8 and Ka2 is 1 x 10^-19. Please show all your work.
5. What is the concentration of silver(I) ion in a saturated solution of silver(I) carbonate containing 0.0030 M Na2CO3? For Ag2CO3, Ksp = 8.6 x 10-12. A) 6.0 x 10-4 M B) 2.0 x 10-'M C) 8.0 x 10-'M D) 5.4 x 10-5M E) 8.0 x 10-4M 6. Balance the following oxidation-reduction occurring in acidic solution. MnO4 (aq) + Co2+(aq) →Mn²+ (aq) + Co3+ (aq) A) B) C) D) E) MnO4 (aq) + 8 H+ (aq) + Co2+(aq) Mn²+ (aq)...
pH LI Calculate the pH of the following solutions: Solution (a) 0.10 M CH3COOH 12.9 (b) 0.10 M NH3 Mixture of 25.00 mL of 0.10 M HCl + 25.00 mL of 0.10 NaOH Mixture of 20.00 mL of 0.10 M NaOH + 20.00 mL of 0.10 M CHCOOH (e) Mixture of 20,00 mL of 0.10 M HCI + 20.00 mL of 0.10 M NH; Saturated Mg(OH)2 (s) aqueous solution if water's dissociation is negligible K[CH3COOH) = 1.8x10-Kb [NH:] = 1.8*10-9;...
Question 4 07 1.5 pts What is the concentration of Pb2+ in a saturated solution of PbCl2 in 0.10 M KCl solution. (Ksp = 1.4 x 108)? Why is [Pb2') in this question (smaller/larger) than in Question 3? Hint: What is the initial [CI] before PbCl2 is dissolved? because the presence of chloride ion prevents the dissolution 1.4 x 10M of PbCl2 1.5 x 10M same as in Question 3 1.4 x 10-M, because the presence of chloride ion slows...