Question

The table to the right shows a list of hypothetical acids and their pkb values. Which of the acids will have the weakest conjugate base? (Be Careful!) HX2 pK= 9.36 HXY pKb = 8.73 HXY pK= 10.08 HY2 pK) = 7.94 OA. HAY OB. HX2 OC. HXZY OD. HY2

Answer 1

conjugate HAY weakest conjugate base The value af basi O acids withe their base & pky value HX2 - =) pky = 9.36 xy =) =) pkp = 8.73 THX 27, » X2Y =)/pk = 10.08 HY2 Y = pky = 7.94. ply describes the usi city of the conjugate base. As the value of pks decreases, the basisity of the conjugate base increases. So, the strong bo conjugate base will have Pkb & vice-vessa. So, the weakest base Here, the highest value value for play is for Xzy robuspoke bease which is conjugate base af HX2 Y acid. so, correct option is HX2Y will have the weakest conjugate bare. value cy have highest value cf pky

Given standard free SG = -33.32 J/me) energy Temperceture T = 298K equillibrium Constant K = ? AGO = - RT Ink Ink= DGO "R= 8.314 ] K men -RT Ink -33-327/mol - 18:314 Jkt motty 298 ) Ink +33.32 +2422-572 Ink 0.0 1375 0.01375 K e K = 1.0138 Kł 1.01 so, the value of equillibrium constant K is eapt option 1.01