Question
In: Chemistry
1.) Determine the initial concentration of a solution of the weak acid HClO2 , if it...
1.) Determine the initial concentration of a solution of the weak acid HClO2 , if it its pH is 1.20 and Ka = 1.10
Solutions
queen_honey_blossom answered 8 months agoRelated Solutions
Weak diprotic acid H2A is titrated with 0.2000 M NaOH. The initial concentration of H2A is...
Weak diprotic acid H2A is titrated with 0.2000 M
NaOH. The initial concentration of H2A is 0.1000 M and
the initial volume is 50.00 mL.
Ka1 = 1.0 x 10−5
Ka2 = 1.0 x 10−9
(a) (0.2 pt) Identify the predominate species at the first
equivalence point, by chemical formula:
(b) (0.5 pts) Calculate the pH of the acid solution before any
base is added.
(c) (0.5 pts) Calculate the pH at the first equivalence
point.
(d) (0.2 pts)...
Determine the pH of a 0.046 M iodous acid (HIO2) solution. Iodous acid is a weak...
Determine the pH of a 0.046 M iodous acid (HIO2) solution.
Iodous acid is a weak acid (Ka = 3.2 ✕ 10−5 M).
A chemist needs to determine the concentration of a sulfuric acid solution by titration with a...
A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. He has a 0.1157 M standard sodium hydroxide solution. He takes a 25.00 mL sample of the original acid solution and dilutes it to 250.0 mL. Then, he takes a 10.00 mL sample of the dilute acid solution and titrates it with the standard solution. The endpoint was reached after the addition of 14.02 mL of the standard solution. What...
You need to determine the concentration of a sulfuric acid solution by titration with a standard...
You need to determine the concentration of a sulfuric acid
solution by titration with a standard sodium hydroxide solution.
You have a 0.1539 M standard solution. You take a 25.00 mL sample
of the original acid solution and dilute it to 250.0 mL. You then
take a 10.00 mL sample of the dilute acid solution and titrate it
with the standard solution. You need 12.23 mL of the standard
solution to reach the endpoint. What is the concentration of the...
You need to determine the concentration of a sulfuric acid solution by titration with a standard...
You need to determine the concentration of a sulfuric acid
solution by titration with a standard sodium hydroxide solution.
You have a 0.1689 M standard solution. You take a 25.00 mL sample
of the original acid solution and dilute it to 250.0 mL. You then
take a 10.00 mL sample of the dilute acid solution and titrate it
with the standard solution. You need 17.49 mL of the standard
solution to reach the endpoint. What is the concentration of the...
1) The percent ionization of a certain weak acid is 3.14%. If the starting concentration of...
1) The percent ionization of a certain weak acid is 3.14%. If
the starting concentration of the acid is 0.55 M, what is the Ka of
the acid?
2) What is the pH of a buffer made by mixing 575 mL of 0.150 M
potassium acetate with 450 mL of 0.225 M acetic acid (Ka = 1.8 ×
10^–5 )?
Determine the pH of a solution that is 0.00596 M HCl and 0.0522 M HClO2. The...
Determine the pH of a solution that is 0.00596 M HCl and 0.0522
M HClO2. The ?a of HClO2 is 1.1×10−2 .
A student must make a buffer solution with a pH of 1.00. Determine which weak acid...
A student must make a buffer solution with a pH of 1.00.
Determine which weak acid is the best option to make a buffer at
the specified pH.
formic acid,Ka = 1.77 x 10−4,
2.00 M
sodium bisulfate monohydrate, Ka = 1.20 x
10−2, 3.00 M
acetic acid, Ka = 1.75 x 10−5,
5.00 M
propionic acid, Ka =1.34 x 10−5,
3.00 M
Determine which conjugate base is the best option to make a buffer
at the specified pH.
sodium...
A chemistry graduate student is given 250.mL of a 0.10M chlorous acid HClO2 solution. Chlorous acid...
A chemistry graduate student is given 250.mL of a 0.10M chlorous
acid HClO2 solution. Chlorous acid is a weak acid with
Ka=1.1x10^−2.
What mass of NaClO2 should the student dissolve in the HClO2
solution to turn it into a buffer with pH =2.40?
You may assume that the volume of the solution doesn't change
when the NaClO2 is dissolved in it.
Be sue your answer has a unit symbol, and round it to 2
significant digits.
Concept questions: 1) Acetic acid is a weak acid. Why is a 2M solution of acetic...
Concept questions: 1) Acetic acid is a weak acid. Why is a 2M
solution of acetic acid less hazardous than a 2M solution of
hydrochloric acid? 2) What species must be present in a buffer?
Write a chemical reaction that explains how the buffer reacts with
acid and then write a chemical reaction that shows how the buffer
reacts with base. Wxplain how a buffer works.
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