5. Equal volumes of 0.02 M AgNOs and 0.02 M Na2S04 are mixed together (hint: volumes...
Which of the following aqueous solutions produce a buffer when equal volumes are mixed together? a) 0.10 M HF + 0.10 M NaF b) 0.10 M NaOH + 0.10 M NaF c) 0.10 M HF + 0.10 M HCl d) 0.10 M KF + 0.10 M NaF
When equal volumes of the following pairs of solution are mixed, how many of them are buffer solutions? OAc = CH3COO- 0.1 M HCl and 0.2 M NaOAc 0.1 M NaOH and 0.2 M NaOAc 0.1 M HOAc and 0.2 M NaOAc 0.2 M NaOH and 0.2 M HOAc A. two B. four C. none D. three E. one
HAc has Ka = 1.8 10-5, and HF has Ka = 7.2 10-4. If equal volumes of 1 M solutions of HAc and the salt, NaF, are mixed together, the resulting solution would be: A. acidic B. basic C. neutral
D Question 6 1 pts When equal volumes of the solutions are combined, which of the following produces a solution with the largest buffer capacity? 10 M HNO3 and 1.0 M NaOH O 1.0 M NaF and 1.0 M NaOH O 1.0MHF and 1.0 M NaOH O2.0 M HNO3 and 2.0 M LINO3 O 1.0M HF and 1.0 M LIF 1 pts Question 7 Equal volumes of 0.50 MHBr and 0.50 M NH3 are mixed together. The resunting solution can...
Will a precipitate form when 5.00mL of 1x10^-6 M Cd(NO3)2 and 7.00 mL of 2.5x10^-5 M Na2CO3 are mixed together? [ksp(CdCO3) = 2.5x10^-14] What if he above solution was made 1.5 M in NH3 (without changing volumes?) Cd2+ forms a complex ion with NH3 [kf(Cd(NH3)4) = 1.0x10^7]
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...
20) Equal volumes of 0.2 M acetic acid, CH3COOH (K4 = 1.8 x 10 ) and 0.2 M aniline, C6H5NH2 (K) = 3.8 x 10") are mixed at 25°C. a. Which aqueous compound will have the highest concentration when equilibrium is established in the final solution? Justify your answer. b. Is the final solution acidic or basic? Justify your answer.
b. How would you prepare 225.0 mL of 1.33 M HCl from a 6.00 M stock solution? C. When 25.00 mL of 0.695 M HCl reacts with an excess of silver nitrate, will a precipitate form? Write the net ionic equation for this reaction. How many grams of precipitate can be theoretically obtained? d. What volume of 0.2500 M strontium hydroxide is required to completely react with 75.00 mL of 0.07942 M HCI? e. When 37.5 mL of 0.439 M...
5. Calculate the pH of buffer formed by mixing 85 mL of 0.12 M lactic acid with 95 mL of 0.16 M sodium lactate (K, for lactic acid is 1.4 x 10-) a. 3.77 b) 4.03 ) 3.56 d) 4.23 e) 3.66 6. 18 2.5mL of 0.30M AgNO3 is mixed with 7.5mL of 0.015M Na2SO4, should a precipitate of Ag2SO4 form? (Ksp - 1.2x10-5 a) Q - Ksp the system is at equilibrium and the solution is saturated b) Q<Ksp,...
A26. What will be observed when 15.0 mL of 0.040 M lead(II) nitrate, Pb(NO3)2, is mixed with 15.0 mL of 0.040 M sodium chloride? (lead chloride Ksp = 1.7 × 10–5). (A) A clear solution with no precipitate will result. (B) Solid PbCl2 will precipitate and excess Pb2+ ions will remain in solution. (C) Solid PbCl2 will precipitate and excess Cl– ions will remain in solution. (D) Solid PbCl2 will precipitate and there will be no excess ions in solution....