Can someone please help answer these organic chemistry lab questions?

PRELABORATORY QUESTIONS1 . When oxidations are carried out with HI , CI 2Of , Usually excess oxidant is used . It is important toquench this excess reagent before the reaction is worked up . What might you use to quench the excess oxidant ?2 . Why is Ci 20 , always used in acidic , not alkaline , solution3 . Write a balanced equation for the oxidation of cyclohexane by hypochlorous acid , HCIO . Note : Thereduction product of hypochlorite ion is chloride ion . )4 . . What is the structure of the organic product of the reaction of benzophenone with NaBH5 . What safety precautions should be taken with NaBIL , ?