# Are The Calculation Correctly Calculated As Well As The Neutralization Equation

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TA:
Date Completed: March 21 , 2020
Fill out this report as you perform the lab. These reports must be independently produced pieces of work.
PART 1
First, report the target pH of the buffer you have been assigned to synthesize.
Target PH
5.0
1. Based on your target pH, the lab manual assigns you to use 5.00 ml of 0.10 M acetic acid or 0.10 M sodium acetate.
Use the Henderson-Hasselbalch equation in your lab manual to calculate the amount of the other reagent you need to
achieve the target pH. Fill in the table as you perform your calculations.
Which reagent were you
Amount of assigned reagent
Amount of other reagent
assigned to use 5.00 ml of?
(mol)
needed to achieve target pH
(mol)
acetic acid
2.74 X10 – 4
2. 74 x 10 – 4
Volume of other reagent
needed to achieve target pH
(mL)
2.75
Show your work below for calculation of: amount of assigned reagent, amount of other reagent needed, volume of
other reagent needed
acetic acid moles
n = (0.0549 M ) (0 005L)
PH = PKa + log [CH3CO 2 -]
= 2.74 x 10-4
[ CH 3 (OZH]
volume
5.00 = 4.74 + 10 9 [ CH 3 ( 0 2quot; ]
n = CV
(2 74 X10 4 mol )
[O. 10 M ]
(0.10 mol
= V
5 00 – 4 74 = 109 [ CH 3 CO 2 – ]
= V
[ O.10 M]
V = 2.75 ML
0 . 26 = 10 9 [ CH 3 ( 0 2 – ]
[O. 10 M ]
10 0.26 = [CH3(02 ]
[0 10M ]
( 0 . 5 4 9 ) ( 0 1 0 M ) = [ CH3 COZ ] = 0.0549 MScience