Chem 112 Lab Practical Review Questions And Answers 100% Verified A+ Guaranteed

What does the term chromatography refer to? {Ans: A wide array of analytical techniques used for the separation of ions and molecules in both liquid and gaseous phases.}How can the molar mass of a solute be determined? {Ans: By measuring the degree to which a known mass of the solute depresses the freezing point of a known mass of solvent. > The molality of a solution can be calculated by dividing the change in freezing point by the molal freezing point constant for the solvent. > The number of moles of the solute can then be determined according to moles solute = kg solvent x m. > Finally, the molar mass of the solute can be calculated provided that the mass of the solute dissolved in the solution is known.}Which electrode do anions flow toward in the salt bridge? {Ans: anode}What is the equation for percent error? {Ans: }What effect does increasing the concentration of a dissolved solute have on each of the following colligative properties? > boiling point > freezing point > vapor pressure {Ans: > elevation > depression > salt can be added to roads to lower the freezing point of water and