Chem 230 (KSU) Exam 1 Questions And Answers With Complete Solutions

True of False: Upon standing, the solute and solvent will NOT separate by gravity correct answer: True True of False: The solvent will always be liquid correct answer: False Definition of Molarity correct answer: moles of solute/volume of solution The name given for a solution that contains less solute than it has the capacity to dissolve correct answer: Unsaturated The name given for a solution in which the maximum amount of solute is dissolved correct answer: Saturated Name given for a solution in which more solution is dissolved that it can saturate. (unstable and eventually some of the solute will precipitate out) correct answer: Supersaturated When 2 pure substances are mixed, what is always true correct answer: There is an increase in entropy The solubility of a gas in a liquid is proportional to the pressure of the gas over the solution correct answer: Henry's law The relationship between the vapor pressure change of the solvent and the mole fraction of the solute correct answer: Raoult's Law colligative properties correct answer: properties that depend on the concentration of solute particles but not on their identity list of colligative properties correct answer: -vapor pressure decrease -boiling point increase -feezing point decrease -osmotic pressure The temperature at which a substance's vapor pressure equals the external atmospheric pressure correct answer: Boiling point