Given a solution containing 0.010 M CaCl2 and 0.020 M MgCl2, what formula should be used to calculate the activity coefficients of the ions? O DHLL only O DHL for Ca2+ and Mg2+, DHLL for Cl1- O DHL only O Davies for Ca2+ and Mg2+, DHL for Cl1- O Davies only
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- Given a solution containing 0.010 M CaCl2 and 0.020 M MgCI2, what formula should be used to calculate the activity coefficients of the ions? A. Davies B. Davies for Ca2+ and Mg2+, DHL for CI1- C. DHL for Ca²+ and Mg2+, DHLL for Cl1- D. DHL E. DHLLConsider two solutions: A) 0.020 M KCI and B) 0.020 M in MgSO4. The activity coefficient of OH¯ will be larger in which solution? Solution A Solution B They have the same activity coefficientsIf the standard solutions had unknowingly been made up to be 0.0024 M AgNO3 and 0.0040 1 MK2CrO4, what would be the value of Ksp? The value of Ksp would be larger. The value of Ksp would be smaller. The value of Ksp would be the same. O More information is needed to answer this question.
- A 270.00 mL solution of 0.00150 M AB4 is added to a 380.00 mL solution of 0.00250 M C3D4. What is pQsp for A3D4?A 200.00 mL solution of 0.00105 M AB4 is added to a 270.00 mL solution of 0.00245 M CD5. What is pQsp for AD4? pQsp = -log(Qsp)What is the Qsp of a solution mixture Al(OH)3 formed from 10 mL 1.00M C6H5NH2 and 15 mL 0.10M Al(NO3)3?
- 2. a) Determine the ionic strength of the solution and the activity coefficients for each ion (Na. Ca, and S04) in a solution containing 0.005 M Na2SO4, and 0.001M CaSO4 b) An 18.2% ionized 0.05M solution is prepared from hypochlorous acid (HOCI). What is the pH most nearly? (HOCIOCI + H)What is the ionic strength of a solution in which the following have been dissolved: 0.03 m KBr and 0.02 m CaCl2?Only 1.3x10-6 moles of lead sulfate PbSO4 can be dissolved in 100 mL of a solution of sodium sulfate Na2SO4 at 0.001 mol.L-¹. 1- What is the solubility product of PbSO4? 2- 20 mL of a solution of lead nitrate Pb(NO3)2 at 2×10-4 mol.L-¹ are added to 80 mL of a solution of sodium sulfate at 0.001 mol.L-¹. Is it possible for lead sulfate to precipitate under these conditions? Sulfuric acid is considered as a strong diprotic acid. The answer : 1) Ks = 1.3×10-8; 2) PbSO4 precipitates
- Use the Solver function in Excel to determine [Sr2+1, [F¯], [HF], [OH¯], and [H*] for a saturated solution of SrF,. The pKsp for SrF, is 8.58. The pKa for HF is 3.17. Ignore activity coefficients. [Sr?+) = 8.7 x10-4 [OH¯] = 1.61 x10-7 M M Incorrect [F] = 1.74 x10-3 [H*] 6.25 x10-8 M M Incorrect [HF] = 1.61 x10-7 M IncorrectWhich of the following salts has the least molar solubility in water? Select one: O a. Fes (Ksp = 4 x 10-19) O b. PtS (Ksp 8 x 10-73) O c. NIS (Ksp = 8 x 10-37) O d. MnS (Ksp = 8 x 1016) O e. comparative solubility cannot be determined since molar masses are not given.Consider two solutions: A) 0.022 M MgCl2 and B) 0.022 M K3PO4. The activity coefficient of H* will be smaller in which solution? A O They have the same activity coefficients