10. Which of the following pairs form solution of the following pairs form solutions? (like dissolve...
7. Which of the following solutions is isotonic (no osmosis) with a 0.30 M NaNO, solution? {hint - Find the osmosis molarity or "osmolarity" = (# ions)M} a) 0.10 M CaCl2 b) 0.30 M glucose c) 0.60 M NaCl d) 0.15 M AICI; e) 0.75 M KCI (n-1 for glucose) 8. If a solution of 0.20 M Mg(NO3)2 is separated from a 0.25 M KCl solution by a membrane that is permeable to water, osmosis will occur. Describe the osmotic...
1 A) Which of the following pairs of solutions when mixed will form a buffer solution? Group of answer choices H2SO4 and Ca(OH)2 NH3 and NH4Br NaNO3 and HNO3 KOH and KNO2 B)Phosphoric acid, H3PO4, is a triprotic acid with the following Ka values: Ka1 = 7.5 x 10-3; Ka2 = 6.2 x 10-8; Ka3 = 3.6 x 10-13 In a solution of 0.15 M H3PO4, which species will be most abundant? H3O+ H3PO4 HPO42- H2PO4-
Question 9 2 pts In which of the following pairs of ionic compounds are both members of the pair soluble in water? Ba(OH)2 and BaSO4 PbSO4 and Baco; AgNO3 and Ag,CO; NH,I and CuSO4 Question 10 2 pts Choose the correct numerical value for the molarity from the response list for a solution prepared from 0.10 mole solute in 2.0 L of solution. 0.20 M 20.0 M 0.10 M 0.050 M Question 11 2 pts Which of the following solutions...
Which of the following pairs of aqueous solutions will form a precipitate when mixed? Which of the following pairs of aqueous solutions will form a precipitate when mixed? Pb(C2H3O2)2 + Li2SO4 KOH + Na2S KNO3 + NaOH (NH4)2SO4 + NaI None of the above solution pairs will produce a precipitate.
roblem 9.2 Part A Which of the following pairs of substances would you expect to form solutions? Check all that apply. CCl, and water Benzene (CH) and MgSO, Hexane (CH 4) and heptane (C7H16) Ethyl alcohol (C,H,OH) and heptanol (C,H,OH) Submit Request Answer Provide Feedback
Which of the following pairs of aqueous solutions will form a precipitate when mixed? a. Li COs Nal b. Li SOs+KOH d. e. None of these solution pairs will produce a precipitate. All of these solution pairs will produce a precipitate.
Calculate the pH of the following buffer solutions: (a) a solution made by dissolving 4.550 g KH2PO4 and 1.871 g K2HPO4 in water to give 350. mL of solution. (b) a solution made by mixing 35.00 mL 0.35 M N2H4 with 15.00 mL 0.21 M N2H5Cl. The base dissociation constant Kb is 8.50 x 10-7 for N2H4 . Assume that the final volume is the sum of the volunes of the two solutions that are mixed.
1) Suppose you made an intravenous solution, intended to be isoosmotic to red blood cells (i.e., 300 mOsm). You add 5 grams of NaCl to 800 ml of distilled water. Will this solution be isoosmotic to cells? if not, what will happen to the cells? (Will they take in water or lose water?) How would you make 500ml of a 5% NaCl solution? You dissolve 20 grams of glucose into water to give a solution whose final volume is exactly...
Which of the following pairs of aqueous solutions will form a precipitate when mixed? KOH +Na2S (NH4)2SO4 + Kl Ca(C2H3022+ Na2S04 KNO3 LiOH None of these solution pairs will produce a precipitate
9) Which one of the following pairs cannot be mixed together to form a buffer solutions A) KOH, HNO2 B) H2S03. KHSO3 C) HONH2, HONH3CI D) NaCI, HCI E) RbOH, HF 10) The Henderson-Hasselbalch equation is acid) acid] A) pH- pKa log basel base] D) pH - pKaobase [acid 11) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kp for A- A) A (aq) H30+ (aq) HA (aq) H20 0) B) HA (aq) + OH-(aq) 근...