The ethylammonium ion, ch3ch2nh3+, has a pka of 10.81. it reacts with water to form ethylamine, ch3ch2nh2 and h3o+.
which of the following statements is true at ph 7? a.) ethylamine predominates b.) ethylammonium ion predominates c.) the ph is higher than pka of the ethylammonium ion
d.) the concentration of ethylamine equals that of ethylammonium ion

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.