Assuming an initially impure sample of acetaminophen, would you expect its melting point to change upon a successful recrystallization? If so, how so? Otherwise, why not? (:
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- What is the molality in mol/kg of a solution if the temperature difference ΔT between the solvent and the solution is 2? Kf for the solvent used (cyclohexane) is 20.8ºC/m. Enter your answer with THREE decimals places, and do not write the unit. Example: 0.023Miscible liquids from homogeneous mixture when added together. is Toluene miscible with water or miscible With ethyl alcohol? Please i need a clear and simple answer to this question. ThanksFind the boiling point rise of a 40 wt% solution of glycerol,,, in water boiling at 299oF
- If 124.4 mL of water is shaken with oxygen gas at 0.81atm, it will dissolve 0.0036 g O2. Estimate the Henry's law constant for the oxygen gas in water in units of g mL ^-1atm^-1.What is the freezing point of radiator fluid that is 60% antifreeze by mass?Kf for water is 1.96 ∘C/m. Express your answer to three significant figures and include the appropriate units.Near room temperature and pressure, ethylbenzene and benzeneare miscible liquids. Assume a mixture of ethylbenzene and benzene behaves as an ideal solution. a) How reasonable is it to assume that such a mixture behaves ideally?
- Please indicate true (T) or false (F) as appropriate: Justify I) The vapor pressure of a solvent is reduced by the presence of a non-volatile solute II) In an ideal solution, the vapor pressure is increased by the presence of a solute Volatile. III) Sea water freezes at a lower temperature than sugar water. IV) In the laboratory, chemists use this effect to judge the purity of a component solid: if impurities are present, the freezing point of the compound is lower than the accepted value. A) TFTF B) TTFT C) FTFF D) TTTTUsing a methanol-water mixture as a solvent, a supersaturated solution of sodium chloride and sucrose is made in closed container. The system is let to reach equilibrium woth gas and solid phases. Name the phases and components of the system and define the degree of freedom and its meaning.When can the equation Psolution=Xwater in solution(Ppure water) be used? (i.e. What are its limitations?)
- What is the heat of hydration (∆Hhydration) ? How does theenthalpy of solution depend on the relative magnitudes of∆Hsolute and ∆Hhydration?You've just synthesized a new molecule and need to purify it by recrystallization. You find that it is poorly soluble in water and highly soluble in ethanol, even when cooled in ice. What solvent should work in this situation? a. water b. Recrystallization from any solvent is impossible. c. methanol d. a solvent mixture - water and ethanolaccording to wikipedia what is the solubility of benzoic acid in water at 25 degrees and 100 degrees? if you were given 1.55 grams of benzoic acid how much boiling water would you need to dissolve it all (show all work)? If you were to cool the solution to 25 degrees afterwards, would the solution be saturated? justify