What is the pH for the solution made from 11.10 mL of 0.278 M HCl solution mixed with 70.90 mL of 0.1300 M ammonia solution ? Note that the pKa for NH4+ is 9.241
chemistry - annomynous, Friday, May 28, 2010 at 9:40pm
hey i found the working to this somewhere else and it was
its a buffer so
pH=pKa + log[base]/[acid]
=9.241 + log [70.9x.1300]/[11.1x0.278]
which makes sense but...
i also had that question on my assignment and got it wrong
the actual answer is 9.54
i cannot find a reason for this but as we were told not to use that eqn in chem then there must be another way to do it
chemistry - anny, Thursday, December 9, 2010 at 8:18pm
calculate the percent composition for NaOH and the tell how many grams of each elements are in a 14 gram sample.