Which statement is true? Statement 1: Extraction is a technique used to separate compound/s of interest from the sample matrix or mixture. Statement 2: The distribution coefficient is the ratio of the equilibrium volumes of the two solvents
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Which statement is true?
Statement 1: Extraction is a technique used to separate compound/s of interest from the sample matrix or mixture.
Statement 2: The distribution coefficient is the ratio of the equilibrium volumes of the two solvents.
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- Explain how you could separate an equimolar mixture of Compound X, Y and Z. (a flow chart). NH2 画 HO. Compound X Compound Y Compound Z› Calculate the value of the equilibrium constant, Kỵ, for the reaction Q(g) + X(g) — 2M(g) + N(g) given that Kc = M(g) — Z(g) 6R(g) 2 N(g) + 4 Z(g) 3 X(g) + 3 Q(g) = 9R(g) Kc1 = 3.48 Kc2 Kc3 = 0.587 = = 13.6Distribution coefficient (KD) is the sum of the concentrations of a substance in the distinct and immiscible layers. This value is useful when choosing a suitable solvent for isolation of specific solutes or compounds. Which of the statements is correct? None of the statements is correct. Only the first statement is correct Only the second statement is correct Both statement are correct
- Determine the value of the equilibrium constant, Kgoal , for the reaction N2 (g) + O2 (g) + H2 (g) = N,H4(g) +NO2(g), Kgo goal = ? by making use of the following information: 1. N2(g) + O2 (g)= 2NO(g), K1 = 4.10 x 10-31 2. N2(g) + 2H2(g) = N,H4(g), К = 7.40 x 10–26 3.2ΝΟ (g) +0, (5) 2ΝΟ, (5) . K3 = 6.00 x 10' -13 Express your answer numerically. • View Available Hint(s) ? Kgoal =Based on a Kc value of 0.170 and the given data table, what are the equilibrium concentrations of XY, X, and Y, respectively?Pure potassium hydrogen phthalate is used for the standardization of the sodium hydroxide solution. Suppose that the potassium hydrogen phthalate is not completely dry. Will the reported molar concentration of the sodium hydroxide solution be too high, too low, or unaffected because of the moistness of the potassium hydrogen phthalate? Explain.
- 10. A student analyzed a limestone sample but forgot to dry it. He found 31.20% CaO, whereas the correct value was 31.60. If the error was caused by the failure to dry the sample, what percentage moisture did the sample contain? 11. A 0.8000-g sample of iron ore containing 21.00% Fe is analyzed gravimetrically. If the final precipitate (assumed to be Fe,03) contains 20.0 mg of Al,O3 by mistake, what percentage of Fe does the analyst find?A 10.00 ml sample with an unknown concentration of KNO3 was studied at 60° C. If an additional 2.4 g of KNO, were added to reach saturation. What was initial concentration of Q3 KNO, in M.Write the balanced NET ionic equation for the reaction when aqueous SrBr₂ and aqueous K₂SO₄ are mixed in solution to form solid SrSO₄ and aqueous KBr. Be sure to include the proper phases for all species within the reaction.
- On analysis, an equilibrium mixture for the reaction 2H2S(g) 2H2(g) + S2(g) was found to contain 1.0 mol H2S, 4.0 mol H2, and 0.80 mol S2 in a 4.0 L vessel. What would the Equilibrium Contant, Kc, be in this equation?7. Account for the difference in color of the filtrate of aqueous methylene blue and that of the original mixture. What is the importance of the principle of adsorption in colloidal system? What determines the adsorbing power of a given adsorbent? Relate this to colloidal system.O e) % KBr = % 66.2 , % KCI = % 33.8 %3D The solubility product (Ksp) for 4 points Pb(OH)2 (s) is 2.5 x 10-16. What would be the quantity of solubility by g/L of Pb(OH)2 which has Mwt =241.2 g/mole)? O 9.947 x 10-4 O 5.975 x 10-4 O 7.596 x 10-5 O 9.575 x 10-4 O 9.723 x 10-4 Calculate [H+], PH and POH 4 points