In the reaction shown, what is the mole ratio that would be used to determine the number of moles of H2 that would be produced when 3.5 moles of AIC13 are produced? 2Al(s) + 6HCl(aq) + 3H2 2AlCl3(aq) O 2 mol Al divided by 3 mol HCI O 3 mol H2 divided by 2 mol AICI: 3.5 mol AlCl3 divided by 3 mol of H2 O 3 mol AlCl3 divided by 2 mol H2 O 2 mol AlCl3 divided by 3 mol of H2​

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.