Solvent - Page 4

Questions
  • When a compound, such as salt, dissolves in water, it's said to be? A: Soft B: Soluble C: Hard D: Insoluble
  • How would I purify triphenylmethanol, and how would I know that the sample is pure?
  • Why can't hexane dissolve in water?
  • Why is water often used as a solvent for recrystallization? On the other hand, why are benzene, and carbon tetrachloride rarely used for recrystallization?
  • Why does freezing point depression necessarily occur when adding a nonvolatile solute to a solvent?
  • How do I make an aqueous solution of methanol?
  • Engine degreaser, #Cl_2C=CHCl#, is used for cleaning for automotive parts? Is it a single use solvent?
  • If a hot solvent is used to dissolve a solute, how will the temperature of the solution evolve?
  • What is a Carbon Sink ?
  • What occurs in the following scenarios when the given solute is partitioned between water and diethyl ether?
  • What is the weight of an anhydrous solvent required to make a certain volume of solution ?
  • Which is more water-soluble: #"1-hexanol"#; or #"1,6-hexanediol"#?
  • How do we render a volume of ethanol free of dissolved gas?
  • What happens if you add #"H"_2"SO"_4# into water? What about if you combine #"H"_2"SO"_4# and #"HNO"_3#?
  • Why is potassium metal widely used in synthetic laboratories for drying solvents?
  • How do you know if a compound is soluble in a particular solvent?
  • What is the concentration by mass of #5.5*g# mass of lithium bromide dissolved in #4.5*mL# of water?
  • Why is phenol soluble in water, and toluene insoluble in water?
  • A pure sample of the solvent phenol has a freezing point of 40.85 C. A 0.414 molal solution of isopropyl alcohol in phenol was observed to have a freezing point of 38.02 C. What is the freezing point depression of this solution?
  • Which of the following solutions that does NOT undergo ionization in water? #a.# #"Sodium bromide;"# #b.# #"ferric chloride;"# #c.# #"calcium chloride;"# #d.# #"ethanol."#