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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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
Transcribed Image Text:Determine the mass of solid NaCH:COO that must be dissolved in an
existing 500.0 mL solution of 0.200 M CH:COOH to form a buffer with a pH
equal to 5.00. The value of Ka for CH:COOH is 1.8 x 10-5.
1
2
3
NEXT >
Let x represent the original concentration of CH:COO- in the water. Based on the given
values, set up the ICE table in order to determine the unknown.
CH:COOH(aq) +
H2O(1)
H:O*(aq)
+ CH:COO-(aq)
Initial (M)
Change (M)
Equilibrium (M)
5 RESET
0.200
5.00
-5.00
1.0 x 109
-1.0 x 109
1.0 x 105
-1.0 x 105
1.8 x 105
-1.8 x 105
x+ 5.00
x - 5.00
x+ 1.0 x 10-9
x- 1.0 x 10-9
x+ 1.0 x 105
х-1.0 * 10-+
x+ 1.8 x 10-5
х-1.8 х 10-5
![Determine the mass of solid NaCH:COO that must be dissolved in an
existing 500.0 mL solution of 0.200 M CH:COOH to form a buffer with a pH
equal to 5.00. The value of Ka for CH:COOH is 1.8 × 10-5.
PREV
2
3
NEXT >
Based on your ICE table and definition of Ka, set up the expression for Ka in order to
determine the unknown. Do not combine or simplify terms.
Ка
= 1.8 x 10-5
a
5 RESET
[0]
[500.0]
[0.200]
[5.00]
[1.0 x 10)
[1.0 x 10-]
[1.8 x 10
[z + 5.00]
[x - 5.00]
[x+ 1.0 x 10)
[x- 1.0 x 10-1
[x + 1.0 x 10
[x- 1.0 x 101 r+ 1.8 × 101 x- 1.8 x 101](https://content.bartleby.com/qna-images/question/108a0acc-c86a-4fb9-81b6-4d3403f04067/6a7744bd-07b7-4369-a82e-850794f18c47/ojt4nt6_thumbnail.png)
Transcribed Image Text:Determine the mass of solid NaCH:COO that must be dissolved in an
existing 500.0 mL solution of 0.200 M CH:COOH to form a buffer with a pH
equal to 5.00. The value of Ka for CH:COOH is 1.8 × 10-5.
PREV
2
3
NEXT >
Based on your ICE table and definition of Ka, set up the expression for Ka in order to
determine the unknown. Do not combine or simplify terms.
Ка
= 1.8 x 10-5
a
5 RESET
[0]
[500.0]
[0.200]
[5.00]
[1.0 x 10)
[1.0 x 10-]
[1.8 x 10
[z + 5.00]
[x - 5.00]
[x+ 1.0 x 10)
[x- 1.0 x 10-1
[x + 1.0 x 10
[x- 1.0 x 101 r+ 1.8 × 101 x- 1.8 x 101
Expert Solution
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Step 1
Volume of solution = 500ml
Concentration of CH3COOH = 0.2M
pH of buffer = 5
Ka for CH3COOH = 1.8×10-5
We have been asked to calculate the mass of salt formed.
Step by stepSolved in 2 steps with 1 images
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