Question

6) Compare the change in pH that occurs when 10 ml of a 0.10 M N2OH is added to 100 ml of pure water, and when it is added to 100 ml of a benzoic acid buffer soltution that is 0.15 M in both C6H5CO2H and C6H5CO2N.. Explain the results

Answer 1

Ca) Pure wakY P -3 mol -3 mo1 Na OH Con Cantva tion af Na 0H Mol ar -3 mo 1 ib -2 Moy Lt 1 0 -2 O [NaoH -2 O H -10g 10 2 14-2 12 12 7 A P I

b Mot HCO0Na O OIS mol H P Inihat LCMCOONa Ka 4-2 O 15 4. 2 Ka f Genzoic 4.2 ASSumid P ACid

finat p Oh addin NaoH HCOaH f NaOH CHCOONaH20 O OIS -o 0 O 0 25 ) 4.2 y-2 AP 4.2 4.9 O7