Question

please help, struggling

Exercise 16.24 For each of the following solutions, calculate the initial pH and the final pH after adding 0.005 mol of NaOH Part A 290.0 mL of pure water Express your answers using two decimal places separated by a comma. pH. tial pr final Submit My Answers Give Up Part B 290.0 mL of a buffer solution that is 0.215 Min HCHO2 and 0.310 M in KCHO2 Express your answers using two decimal places separated by a comma. pH. initial, prifinal E Submit My Answers Give Up Part C 290.0 mL of a buffer solution that is 0.315 M in CH CH NH 2 and 0.285 M in CH3CH2NH3Cl Express your answers using two decimal places separated by a comma. pH. tial pHfinal Submit My Answers Give Up

Answer 1

Velune in mL 290 Nao,t t a Sheng bae. o, 7 1.76q PH 14-pott. auHl B ASalt pr Aok aven hn ls prbeSo Fam takn stoudood Val)

3.75 0 10 :0315%0-290 0' 06235 molt 0.0899 Mdu 0'00ち Hoo2 di creaxs by o100S moles das0-0.os 005735 m haha 4- eth0. o0899 + 0.005 0:0949 es s 246, t 189 의09 49 0 05135 3751 655.40

B bax 왜 3.35. Crnet given Jann-lah"Y 욱nthe problem, so, Concentration g CH3CH堯NH3 8.35 295干し09-01285 3.35 3.35 34 6 3.SOGG molu Cont

ton 0.00 0:005 mel 、 と0.09685atn , 0.09635 3.35 ag Co 805) 3.35-o.oq 3.26 Amth lo''69 , PH.end-lo.チ4. The l auser a dapands on lt Valuex