Calculate the pH of a solution prepared by mixing 10.0 mL 1.0 M NaOAc and 35.0 mL 0.4M HOAc. Ka = 1.8E-5

Question

abb0t · Answer

start by writing down the balanced equilibrium equation.

abb0t · Answer

can you do that

anonymous · Answer

PH=4.47+, 397 =5.137
Where 4.47 is the -ve log Ka =pka
And , 397 is  log base/acid 
This is Handerson equation by which you can detrmine the ph of buffer solution

anonymous · Answer

PH=Pka + log [base]/[acid]
It is used only for buffer solution.
Your compounds are salt of conjugate base which is NaOCN
And acid which is HOAC
And this is buffer solution.

vincent-lyon.fr · Answer

The formula given above is ok, but the calculation is wrong.
You should be able to manage this now.

anonymous · Answer

I think it is true , but if you have noticed something wrong , I'll be glade to learn it from you

vincent-lyon.fr · Answer

I mean the numerical values must be calculated again.
pKa is not 4.47 and log [base]/[acid] is not +0.397