Two chemicals at room temperature (about 23°c) were combined in a flask. at first, there were bubbles. then, white flakes appeared at the bottom of the flask. after five minutes, the temperature of the solution was 33°c. a portion of the solution was used to measure its density and boiling point, which were determined to be 4.5 g/l and 82°c,

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н, о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.