An extraction for 0.05 M DDT was done using a 15 mL chloroform (K D = 5.00). The fraction in the organic phase was found to be 0.83. a) How do i

An extraction for 0.05 M DDT was done using a 15 mL chloroform (KD = 5.00). The fraction in the organic phase was found to be 0.83.

a) How do i calculate the volume of DDT before extraction?

b) How do i calculate the % extraction efficiency?