Chemistry Questions please help!!!?
9) A solute has Kp = 3 between toluene and water. 50 mL of 0.25 M aqueous solution of the solute is extracted with toluene. What is concentration of solute remaining in aqueous layer after 2 x 20 mL extractions ?
a. 9.54x10^-3 M
b. 6.25x10^-2 M
c. 1.5x10^-2 M
d. 5.17x10^-3 M
e. 5.17x10^-2 M
10) What is the minimum number of extractions required to ensure 99.9 percent of the solute extracted from a 30 mL sample of 0.1 M aqueous solution of solute is 10 mL portions of chloroform is used. Solute Kp between water and chloroform = 15