Question
In: Chemistry
Calculate the expected buffer capacity of the acetate buffer based on the number of moles of...
Calculate the expected buffer capacity of the acetate buffer based on the number of moles of CH3CO2H in the buffer. (hint, you know the concentration and volume) In other words, how many moles of NaOH are needed to break the buffer? Does the measured buffer capacity of acetate buffer (20mL) meet your expectations?
pKa = 4.74
target pH= 4.9
[HA]= 2.04x10-2 M [A] = 2.96x10^-2 M
Solutions
queen_honey_blossom answered 3 months agoRelated Solutions
The buffer capacity of a solution may be defined as the number of moles of H+...
The buffer capacity of a solution may be defined as the number
of moles of H+ that will change the pH of 1.00 L of the buffer by
1.00 pH units. What is the buffer capacity of a solution which is
0.10 M in acetic acid (Ka = 1.8 × 10-5) and 0.30 M in sodium
acetate, in units of mol (H+) per liter? Please show full work.
(Answer key says 0.21 mol).
how to calculate expected pH , buffer concentration and buffer capacity?
how to calculate expected pH , buffer concentration
and buffer capacity?
Buffer capacity is defined as the number of moles of a strong acid or strong base...
Buffer capacity is defined as the number of moles of a strong
acid or strong base that is required to change the pH of 1 L of the
buffer solution by one unit. What is the buffer capacity of a
solution that is 0.12 M in acetic acid and 0.12 M in sodium
acetate? ( Ka for acetic acid is 1.8 times 10^-5.)
Buffer capacity is defined as the number of moles of a strong acid or strong base...
Buffer capacity is defined as the number of moles of a strong
acid or strong base that is required to change the pH of 1 L of the
buffer solution by one unit. What is the buffer capacity of a
solution that is 0.12 M in acetic acid and 0.12 M in sodium
acetate? ( Ka for acetic acid is 1.8 times 10^-5.)
A. One beaker contains 10.0 mL of acetic acid/sodium acetate buffer at maximum buffer capacity (equal...
A. One beaker contains 10.0 mL of
acetic acid/sodium acetate buffer at maximum buffer capacity (equal
concentrations of acetic acid and sodium acetate), and another
contains 10.0 mL of pure water. Calculate the hydronium ion
concentration and the pH after the addition of 0.25 mL of
0.10 M HCl to each one. What accounts
for the difference in the hydronium ion concentrations? Explain
this based on equilibrium concepts; in other words, saying that
“one solution is a buffer” is not...
A buffer soln contains 0.1M CH3COOH and 0.1M sodium acetate buffer. Calculate the pH after the...
A buffer soln contains 0.1M CH3COOH and 0.1M sodium
acetate buffer. Calculate the pH after the addition of 4.0 mL of
0.025 M HCl to 10 mL of the buffer. The pKa for acetic acid is
4.74/
Preparation of the acetic acid-sodium acetate buffer: Calculate the theoretical pH of this buffer solution. 3.504...
Preparation of the acetic acid-sodium acetate buffer:
Calculate the theoretical pH of this buffer
solution.
3.504 grams of
NaC2H3O2*3H2O with 8.8
mL of 3.0 M acetic acid and 55.6 mL of distilled water.
Experimental pH of buffer solution: 4.8
A buffer solution is 0.20 M in acetic acid and sodium acetate. Calculate the change in...
A buffer solution is 0.20 M in acetic acid and sodium acetate.
Calculate the change in pH upon adding 1.0mL of 0.10 M HCL to 10mL
of this solution.
A buffer contains 0.150M acetic acid and 0.105M in sodium acetate. a) Calculate the pH of...
A buffer contains 0.150M acetic acid and 0.105M in sodium
acetate.
a) Calculate the pH of the buffer.
b) What is the volume of 6.0M NaOH must be added to raise the pH
of 100.0 mL of the buffer by 1.5 pH units?
c) Calculate the pH when 2.0 mL of 6.0M is added to 100.0 mL to
the buffer.
please show work. question is due before 11PM
1. Calculate the buffer capacity for 100 mL of buffer if 12.02 mL of 0.09978 M...
1. Calculate the buffer capacity for 100 mL of buffer if 12.02
mL of 0.09978 M NaOH was used to change the pH by 0.54 units.
a. 0.022 b. 0.00022 c.12.22 d.0.22
2. Calculate the pH of a buffer with 0.10 M benzoic acid and
0.10 M sodium benzoate. Use activity coefficient table 8-1 in the
(9th edition) textbook to determine the activities for the ions
(benzoate ion =C6H5CO2¯). The pKa
of benzoic acid is 4.20.
a. 4.20 b. 4.28...
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