1) This series of reactions proceeds predominantly to the right as written. HC2H

Question

1) This series of reactions proceeds predominantly to the right as written.

HC2H3O2 + NH3 <===> NH4+ + C2H3O2-

HBr + H2O <===> H3O+ + Br -

NH4+ + OH- <===> NH3 + H2O

H3O+ + C2H3O2- <===> H2O + HC2H3O2

A) Arrange the bases NH3, H2O, OH- , C2H3O2- and Br - in order of increasing basic strength.

B) Under your ranking for the Bronsted bases, list the formulas of their conjugate acids.

C) Complete the following reactions, then indicate, using information above, in which direction equilibrium is shifted.

HBr + C2H3O2- <===>

NH4+ + Br - <===>

Explanation / Answer

A) Br- < H2O < CH3O2- < NH3 < OH-

B) HBr , H3O+ , CH3O2H , NH4+ , H2O

C) HBr + C2H3O2- <-------> C2H3O2H + Br-

equilibrium shifts right side as HBr is strong acid easily loses H+ than C2H3OH

NH4+ + Br- <------> NH3 + HBr

equilibrium shifts left side as HBr is stronger acid than NH4+ and HBr loses H+ easily

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