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
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- Consider 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 coefficientsdihydrate 4. H₂C2O4.2H2O(s) is a primary standard substance. 2.3688 g of oxalic acid c concentration of the NaOH solution. Hint: You must write a balanced equation for the were completely neutralized by 42.56 ml of NaOH solution. Calculate the molar Setup:Of two KBr solutions, one 0.50 m and the other 0.20 m, which is hypotonic with respect to the other?
- You may want to reference (Page 834) Section 18.3 while completing this problem. Part A If 130.0 mL of 0.0020 M Na2SO4 (aq) is saturated with CaSO4, how many grams of CaSO4 would be present in the solution? [Hint. Does the usual simplifying assumption hold?] Express your answer using two significant figures. VE ΑΣΦ ? m = 0.43 Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining gHow much KBr could dissolve in 50 g of H2O at 70ºC?What would happen to the solubility of BaSO4BaSO4in a 0.10 M CaSO4 solution in comparison to its solubility in water?
- What weight of potassium hydrogen phthalate will require 30. mL of a 0.30M NaOH solution to reach the equivalence point? KHP MM 204.22 g/mol .CO;K' .CO;K' NaOH + H2O + *CO,H COƠ,Na'The ionic strength of the solution containing 0.1 M FeCl3 and 0.2 M FeCl2 is equalWhich of the following parameters DOES NOT affect the activity coefficient of an ion in an aqueous solution? O The charge of the ion. O The effective hydrated radius of the ion. O The number of equilibria the ion participates in. The ionic strength of the solution.
- Given a solution containing 0.010 M CaCl2 and 0.020 M MgCl2, which of the following statements is CORRECT? O The activity coefficient of Ca2+ is equal to the activity coefficient of Mg2+. O The activity of Ca2+ is equal to the activity of Mg2+. The activity coefficient is the same for all the ions in solution. O The activity coefficient of Ca2+ is not equal to the activity coefficient of Mg2+.12. The following quantities of salts were added to a volume of water to make 1 liter of solution: 1 x 10-2 moles NaCl 2 x 10-2 moles CaCl, 2 x 10-2 moles BaCl, (a) What is the ionic strength of the solution? (b) A small amount of phosphate salt is added to the same solution with negligible change in ionic strength. Given K = 10-7.2 for the reaction H,PO, = H+ + HPO,?- Calculate (H*][HPO,2-1/[H,PO,"), called °K, using the Güntelberg ap- proximation of the DeBye-Hückel law. (c) Calculate the "salting-out" coefficient, k,, for a nonelectrolyte in the same solution if its activity is 10-3 M and its concentration is 9.5 x 10 4 M.if 2.00 moles of a substance is dissolved in 1.00kg of water, the freezing point of the solution decreases by 7.44C. Does this substance dissociate to form ions in solution? explain why.