0.1g of iodine are dissolved in 100mL of water (in the presence of KI ). This aqueous solution was been extracted with 18mL of chloroform. After extraction, 5ml of the iodine remained in the aqueous solution was titrated with a standard solution of sodium thiosulfate 0.01M with starch indicator. The volume added for this titration is 3.5mL of sodium thiosulfate. Calculate the separation's extraction efficiency Exercice 2 40mL of an iodine solution 0.2M was mixed with 20mL of ether. After extraction, the iodine reminder in the aqueous phase is 0.6 mmole. Calculate the Extraction efficiency of iodine %E