Question
In: Chemistry
1. What are necessary buffer components? 2. Write reaction equations to explain how your acetic acid/sodium...
1. What are necessary buffer components?
2. Write reaction equations to explain how your acetic acid/sodium acetate buffer reacts with an acid and a base. Why pH does not change? Explain.
3. At which point does a buffer lose its effectiveness? Use your data to determine the buffer capacity of Buffer A and Buffer B. Explain.
Solutions
queen_honey_blossom answered 10 months agoRelated Solutions
1.Write reaction equations to explain how your acetic acid-acetate buffer reacts with an acid and reacts...
1.Write reaction equations to explain how your acetic
acid-acetate buffer reacts with an acid and reacts with a base.
2.Buffer capacity has a rather loose definition, yet it is an
important property of buffers. A commonly seen definition of buffer
capacity is: “The amount of H+ or OH– that can be neutralized
before the pH changes to a significant degree.” Use your data to
determine the buffer capacity of Buffer A and Buffer B. 3.Say, for
example, that you had...
How would Acetic Acid, HC2H3O2 and Sodium Acetate, NaC2H3O2 work as a buffer? Explain with equations.
How would Acetic Acid, HC2H3O2 and Sodium Acetate, NaC2H3O2 work
as a buffer? Explain with equations.
An acetic acid/ sodium acetate buffer solution was prepared using the following components: 3.46 g of...
An acetic acid/ sodium acetate buffer solution was prepared
using the following components:
3.46 g of
NaC2H3O2∙3H2O (FW. 136
g/mol)
9.0 mL of 3.0 M HC2H3O2
55.0 mL of water
-What is the total volume of the solution?
-Calculate the concentration of the
[C2H3O2-] in this
solution.
-Calculate the concentration of the
[HC2H3O2] in this solution.
-Calculate the pH of this buffer solution. The Ka for
acetic acid is 1.8x10-5.
-If you take half of this solution and add 2...
An acetic acid-sodium acetate buffer can be prepared by adding sodium acetate to HCl(aq). a) Write...
An acetic acid-sodium acetate buffer can be prepared by adding
sodium acetate to HCl(aq).
a) Write an equation for the reaction that occurs when sodium
acetate is added to HCl(aq)
b) If 10.0g of CH3COON is added to 275 mL of 0.225 M
HCl(aq), what is the pH of the resulting buffer?
c) What is the pH of the solution in part b after the addition
of 1.26g of solid NaOH?
2. A buffer solution contains .120 M acetic acid and .150 M sodium acetate. (a) how...
2. A buffer solution contains .120 M acetic acid and .150 M
sodium acetate.
(a) how many moles of each component are in 50.0 mL of
solution?
(b) If you add 5.55 mL of .092 M NaOH to the solution in part
(a), how many moles of acetic acid, sodium acetate, and NaOH will
be present after the reaction?
(c) If you add .50 mL of .087 M HCl to the solution in part (a)
how many moles of acetic...
2. A buffer solution contains .120 M acetic acid and .150 M sodium acetate. (a) how...
2. A buffer solution contains .120 M acetic acid and .150 M
sodium acetate.
(a) how many moles of each component are in 50.0 mL of
solution?
(b) If you add 5.55 mL of .092 M NaOH to the solution in part
(a), how many moles of acetic acid, sodium acetate, and NaOH will
be present after the reaction?
(c) If you add .50 mL of .087 M HCl to the solution in part (a)
how many moles of acetic...
A 250mL buffer solution is 0.250M in acetic acid and 0.250M in sodium acetate. A) What...
A 250mL buffer solution is 0.250M in acetic acid and 0.250M in
sodium acetate.
A) What is the pH after the addition of 0.005 mol of HCl?
B) What is the pH after the addition of 0.005 mol of NaOH?
A 280.0mL buffer solution is 0.220M in acetic acid and 0.220M in sodium acetate. A. What...
A 280.0mL buffer solution is 0.220M in acetic acid and
0.220M in sodium acetate.
A. What is the initial pH of this solution?
B. What is the pH after addition of 0.0050mol of HCl?
C. What is the pH after addition of 0.0050mol of NaOH?
Prepare 1 L of an acetic acid sodium acetate buffer with a pH of 5.00 and...
Prepare 1 L of an acetic acid sodium acetate buffer with a pH of
5.00 and a buffer concentration of 100 mM. Besides water you only
have a 500g bottle of sodium acetate trihydrate, 1L of 1.00
hydrochloric acid, and 1L of 1.00 M sodium hydroxide.
A. Identify the reagents needed and calculate all amounts
needed.
B. Calculate the change in pH of a 250 mL portion of the buffer
that has 1 mL of 1.00 M NaOH added to...
10. What is the [CH3COOH ]/[CH3COO– ] ratio in an acetic acid/sodium acetate buffer at pH...
10. What is the [CH3COOH ]/[CH3COO– ] ratio in an acetic
acid/sodium acetate buffer at pH = 4.90? (Ka = 1.8 x 10–5 )
a. 0.31
b. 0.70
c. 1.45
d. 2.41
e. 4.90
11. How many grams of NaCH3COO should be added to 250 mL of
0,100 M CH3COOH when the above solution is prepared?
a. 0.431 g
b. 2.95 g
c. 5.66 g
d. 1.43 g
e.11.9 g
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