Question

4. (Basicity and equilibrium) Complete the following reactions: you must show more than one possible mechanisms before you choose the betterone witha greatly detailed explanation. Then, explain the equilibrium and the explanation must be done in terms of basicity of each compound. (6 pts) H2SO CH200 NHOH NH2

Answer 1

The complete reaction are 0 Hz soy + CH3 Coo H sou + CHz cool - Acetic Acid 'Nholt I NH₃ ammonia for reaction ® are forward and backward The mechanisms (a) and (b) for reactions. Mechanism @ [ for woment librium Ho-8- 0 + CH₃ CooH' : CH₂ Coo =950 H-o-Go H so Mechanism © Ľbackward), H505 + CH₃ Coogh -> H₂ soy + CH₃ Coo

one is mechanism o The better Explanation @it Basicity means tendency of . a compound to act as an baselie hydrom (H+) or pto Proton acceptor), Again, (pkb = -log 1kb) #{ stronger the base = more kb }# l greater basicity IF lower pkb) ... As pkb af : CH₂ coo is 1. (pkb=9.25) than it sou so, CH₂ coo has higher basicity. Hence, equilibrium favours Forward direction Cvia mechanism @ ). where CH₂ coor act as base. &higher (*) For reaction ®, mechanism. (a) is shown below u n (forward) on ANH₂ H NH₂OH TT NH-04 String basicity) . He 1 NH, Hits +ETINACH

Mechanism 6. (backward) . equilibrium IL (+) NH. 2 NH..OH + NH3 >.[ emery . NH OH I NH2 NH,OH + IT Here, mechanism is better one so; backward equilibrium is fauered becouse basicity of NH3 >. NH₂OH. [As per pkb ( NH₂) < pkb (NH₃OH) 7 pkb = 4,74 prb 7.97.. ie Nita is stronger base; And backwara equilibrium containing NH₃. (stronger a base ) dominates