22.25(a)Basicity decreases in proceeding across a row in the periodic table. The increased nuclearcharge as one progresses from carbon to nitrogen to oxygen to fuorine causes the electrons tobe bound more strongly to the atom and thus less readily shared.(b)The strongest base in this group is amide ion, H2N–, and the weakest base is water, H2O.Ammonia is a weaker base than hydroxide ion; the equilibrium lies to the left.The correct order is(c)These anions can be ranked according to their basicity by considering the respective aciditiesof their conjugate acids.BaseConjugate acidKaof conjugate acidH2N2H3N10236HO2H2O102167.23102102.53101The order of basicities is the opposite of the order of acidities of their conjugate acids.
This is the end of the preview. Sign up
access the rest of the document.