I need help with this two part question in chemistry. I really appreciate the wo
ID: 491438 • Letter: I
Question
I need help with this two part question in chemistry. I really appreciate the work shown and the big help. Thanks.
(i) Using the COMBINED first derivative graph for the buffer analysis, determine the volume of HCl (in mL) and the volume of NaOH (in mL) that are needed to reach the buffer limit for the analysis. There should be two buffer limits on the graph. Clearly label the location of the buffer limit on the combined graph.
(ii)Using the molarity of the HCl and NaOH used in the experiment together with the buffer limit volume you determined in the previous part, calculate the moles of HCl and NaOH that are required to reach the buffer limit for the set of analysis (i.e. 5-mL buffer with HCl and NaOH). Show all your work below.
Titration Curve of 5mLAcetate Buffer with HCI and NaOH 11 14 HCI--Volume L)-- NaOHExplanation / Answer
(i) From the graph volume of HCl is needed to reach the buffer limit is 12.0mL because at this volume pH dropped to 2. That indicates all the acetate is neutralized, then there is no buffering action as there is only acetic acid and strong acid HCl.
From the graph volume of NaOH is needed to reach the buffer limit is 4.5 mL because at this volume pH raised from 6 to 11. That indicates all the acetic acid is neutralized, then there is no buffering action as there is only acetate and strong base NaOH. pH 11 corresponding to strong base NaOH.
(ii) Molarity of aOh and HCl are needed to solve this part.