Sodium chloride is added to water (at 25C) until it is

Chapter 17, Problem 108

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Sodium chloride is added to water (at 25C) until it is saturated. Calculate the Cl concentration in such a solution. Substance Gf C6H6(l) 124.50 kJ/mol C6H6(g) 129.66 kJ/mol CCl4(l) 65.21 kJ/mol CCl4(g) 60.59 kJ/mol 105. Some nonelectrolyte solute (molar mass 142 g/mol) was dissolved in 150. mL of a solvent (density 0.879 g/cm3 ). The elevated boiling point of the solution was 355.4 K. What mass of solute was dissolved in the solvent? For the solvent, the enthalpy of vaporization is 33.90 kJ/mol, the entropy of vaporization is 95.95 J/K mol, and the boiling-point elevation constant is 2.5 K kg/mol. 106. You have a l.00-L sample of hot water (90.0C) sitting open in a 25.0C room. Eventually the water cools to 25.0C while the Species G (kJ/mol) NaCl(s) 384 Na(aq) 262 Cl(aq) 131 Integ