Question

signment Score: 465/500 Resources G Give Up? Hint Check Answe Question 1 of 5 > Attempt 6 Consider the equilibration of a weak base B (Ks = 6.53 x 10-5) between water (phase 1) and benzene (phase 2). Which expression represents D, the distribution coefficient? B represents the unprotonated form of the base and BH represents the protonated form of the base. Which expression represents K, the partition coefficient? B represents the unprotonated form of the base and BH+ represents the protonated form of the base. O [B]phuse [B]phasel + [BH]phase 1 [B]phase [B]phasel + [BH+)phase O [BH phase2 [BH]phase [BH* Iphase? [B]phuset + (BH+Iphasel O [BH phase [B]phasel + [BH (BH*Iphone [BH*Iptusel phasel O [Bphase 2 [B]phael [B]phase 2 [B]phael Calculate D at pH 8.68 if K - 460. Will D be larger or smaller at pH 7.00 than at pH 8.68? D 2.20 O smaller

Answer 1

Coption u). Partition coefficient, Borg (ophone 2 prase 1 مجدا organic phasel Bong Bong ago Koh Bt 110 3 BHT + oH (oce prase) in organic phase, :) - only BHT unionized not soluble form as soluble organic phase. in [Bordraal (Boa cola Dishibution coefficlent, De Borg] Phase 2 appen 2 conect we Prowel + Conto hasel [Baq) + [Brita] know kz Corta Corica) (Bog) certa & KGX Coard Coroa) substole Bita eauchan Coorg) 2) 02 (Sur) & Kox (Baad Como Borg) CB D 2 K Corica) Corlag) + K

pMz8-68 2) 2) pol z 14-8-68 25-32 Cor 2 105-32 und so at pH 8.88 2 k Corra Cara + kb 2 46-0 [16532) [105-32) + 6-534105 < 13-14) – 13.1 on 2sig-figures) - pon a 7.00 » Cold 2 107.00 ook Plz 7.00 or ress value Cori), ko move, so vale we move, so will ger total denominato smaller '