Finding major species in aqueous solutions

[parwana]

Which of the following are correct statements ?


a) In an aqueous solution of NH4Cl, H2O, NH4+ and Cl-are the major species present

b) In an aqueous solution of NaCH3CO2, H2O, Na+ and HCH3CO2 are the major species present

c) In an aqueous solution of HCN, H2O, H3O+ and CN- are the major species present

d) In an aqueous solution of HNO3, H2O, H3O+ and NO3- are the major species present

e) In a solution of CH3CO2H and NaOH, Na+ is a spectator ion

I know a should be right since those are ions, but don't know about the rest. Help

 

[Borek]

Which of the following are correct statements ?

You should look at the Ka values for all species and decide, whether acids are dissociated or not. That's the main point.

Try BATE for these calculations - while you should be able to make them by yourself it can help check the results