The distribution coefficient, k = conc. in water
conc. in ligroin
, between ligroin and water for solute A is 7.5. What mass of A would be
removed from a solution of 10.0 g of A in 100 mL of water by a single extraction with 100 mL of ligroin? What mass of A
would be removed by four successive extractions with 25-mL portions of ligroin? How much ligroin would be required to
remove 98.5 % of A in a single extraction?

Apure solvent has a vapor pressure the vapor pressure of a solution. a. equal to b. lower than c. higher than

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?