The following information is available for the extraction of Cu + 2 by CCl4 and dithizone: KD, c = 7x104, β2 = 5x1022; KAHL = 3x10-5; KDHL = 1.1X104 and n = 2. What is the extraction efficiency if a 100.0 ml sample of an aqueous solution of 1.0x10-7 M Cu2 + and 1 M in HCl is extracted using 10.0 ml, of CCl4 containing 4.0x10-4 M dithizone (HL )?