Question

4. (Basicity and equilibrium) Complete the following reactions you must show more than one possible mechanisms before you choose the better one with a greatly detailed explanation. Then, explain the equilibrium and the explanation must be done in terms of basicity of each compound. (6 pts) H2SO4 + CH,00

Answer 1

Basicity and equilibrium... More than one possible mechanism has been shown with better one selected.

Strong the acid weaker is the conjugate base and vice versa.

Sulphuric acid is stronger, so it's conjugate base HSO4- is weaker or has lower basicity.

The complete reaction as © Hy sou + CH3 Coo N H SoĄ + CHE COOH Acetic Acid Nho 1 ammonia The mechanisms for reaction ☺ are (a) and (b) for forward and backward reactions. Mechanism @ t for eventilatorium 1-0-$-02H + : CHz Cou+ H0-5-0 + CH3COOH O Mechanism ② [backward]. H505 + CH₃ Cogh H₂SO4 + CH₃c05

: @it : The better one is mechanism Explanation !!!! ! : . Basicity means tenderity of a a compound to act as an . base i te hy drin & Ht) or pto Proton acceptor), L Again, [pkb = -log Tkb) #2stronger the base - more kb }# l greater basicity (= lower pho) ... As . pkb af CH₂ cool is less - (pub=9.25) than Hsou so, CH₂ coo has higher basicity. Hence, equilibrium favours Forward direction (via mechanism @ ). where where CH₂ coor act as base. Shigher Chy coo String basicity) * For reaction , mechanism (a) is shown below i n (forward) 0 ANH₂ H NH₂OH > IT ENH-014 Hoolt > hes + NH2 NAS + EINAOH

mechanism © Cabaran yang (+) NH of confting competition Hes I RX . NH OH NH2OH + IN Here, mechanism is better one so, backward equilibrium is fauerred becouse basicity of NH3> NH2OH. CAS - pkb ( NH2) < pkb (NH₃OH)] pkb=4.74 1 pkb 7.97.. ię nila is stronger base; And backward equilibrium containing NH3 ( stronger la base ) dominates