1. a. What is the pH of a solution prepared by adding 25.0 mL of 0.10 M acetic acid (Ka = 1.8 x 105) and 20.0 mL of 0.10 M sodium acetate? %3D
1. a. What is the pH of a solution prepared by adding 25.0 mL of 0.10 M acetic acid (Ka = 1.8 x 105) and 20.0 mL of 0.10 M sodium acetate? %3D
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Need help with 1b
![7 / 12
100%
Answer the following questions (la-d and 2a-c). Make sure you place the prelab pages on the
instructor's bench.
These calculations relate to the lab. You will not be able to do the lab without having
these calculations done first!
1. a. What is the pH of a solution prepared by adding 25.0 mL of 0.10 M acetic acid (K.
= 1.8 x 105) and 20.0 mL of 0.10 M sodium acetate?
Total volume - 25 UmLt 20onL= 45ML.
PH = pka lg LB]
Ka: lugli.8x w-5) = 4.74
Atchic Aud: (o.1)(25.0).
=U.056
wnits
45
Sodivm Aetate: (0.1) (20.0)
45
Co.0447
To 056]
PH: 4.74
log
14.04=pH /
35
MaoRool D](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F59ba8978-df20-4b7b-8a20-fd6d11bb939e%2F9940b2de-384f-40d9-937b-9a484448339d%2Ffmqlcjf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:7 / 12
100%
Answer the following questions (la-d and 2a-c). Make sure you place the prelab pages on the
instructor's bench.
These calculations relate to the lab. You will not be able to do the lab without having
these calculations done first!
1. a. What is the pH of a solution prepared by adding 25.0 mL of 0.10 M acetic acid (K.
= 1.8 x 105) and 20.0 mL of 0.10 M sodium acetate?
Total volume - 25 UmLt 20onL= 45ML.
PH = pka lg LB]
Ka: lugli.8x w-5) = 4.74
Atchic Aud: (o.1)(25.0).
=U.056
wnits
45
Sodivm Aetate: (0.1) (20.0)
45
Co.0447
To 056]
PH: 4.74
log
14.04=pH /
35
MaoRool D
Transcribed Image Text:Mail
Vong, Le Tu - Outle X
Le E5PreLab-GR.pdf
8 / 12
100%
+
What is the pH after the addition of 1.0 mL of 0.10 M HCL to 20 mL of the
solution above?
AtPrhiL
Arid: 10.056) (20)(1)t0.1
After HCI tu.1 M)11ML)co.impm
0.050
2111
pka: -loy(i ex 10)= 4.74
Sodium Acetate: U044) (20)
=0419 =
21
pH = 474+ Jog ( )= 4598 =
0419
058
14
35
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