The reaction of ethanol (ch3ch2oh) with aqueous i− in the presence of h+ ions produces the corresponding ethyl halide (ch3ch2i) and reaches completion:

a:

by the combination of an unlimited number of elements

its first and third is your answer i did the qustion the fourth isnt right

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.