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1.6 M methanol>0.5 M Li2SO4>10 Msugar>3 M Fe(NO3)22.3 M Fe(NO3)2>10 M sugar>0.5 MLi2SO4>6 M methanol3.3 M Fe(NO3)2>10 M sugar>6 Mmethanol>0.5 M Li2SO44.10 M sugar>3 M Fe(NO3)2>0.5 MLi2SO4>6 M methanol5.10 M sugar>3 M Fe(NO3)2>6 Mmethanol>0.5 M Li2SO4correctExplanation:A solutions effective molality is its statedmolality multiplied by its van’t Hoff factor:smallskip meff= i·mstatedsmallskip Molecu-lar solids have a van’t Hoff coefficient of verynearly 1. Strong electrolytes have van’t Hoffcoefficients roughly equal to the number ofconstituent ions in their unit formula.Explanation:If ΔG is positive, K must be less than 1;if ΔG is negative, K must be greater than 1.Also, if ΔG is small (compared to RT), thenK will be close to 1, and if ΔG is large, K willbe much smaller or greater than 1.0096.0 pointsImagine a hypothetical reacion for which,ΔH= 0 kJ·mol−1.Considering the LeChatelier principle, which of the followingstatements is true?
Version 384 – Exam 1 – Laude – (52455)31.Lowering the temperature of the systemcause the reaction to shift left.6.0 pointsRank the following species from most toleast miscible in propane (C3H8):CH2NH,CH3F, H2O, C4H101.CH2NH>H2O>C4H10>CH3F2.C4H10>CH3F>CH2NH>H2Ocor-rect3.C4H10>CH2NH>H2O>CH3F4.CH3F>CH3F>H2O>CH2NH5.CH3F>C4H10>CH2NH>H2OExplanation:0116.0 pointsWhich of the following would increase thesolubility of nitrogen gas, N2(g), in the solventwater?I) changing to a less polar solventII) increasing the amount of solventIII) increasing the pressure of N2(g)