1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aleksklad [387]
2 years ago
5

The K a of propanoic acid ( C 2 H 5 COOH ) is 1.34 × 10 − 5 . Calculate the pH of the solution and the concentrations of C 2 H 5

COOH and C 2 H 5 COO − in a 0.441 M propanoic acid solution at equilibrium.
Chemistry
1 answer:
Zigmanuir [339]2 years ago
4 0

Answer:

2.62.

Explanation:

Okay let us first write the parameters in the question in question above out. We are given the ka value of propanoic acid, C2H5COOH to be equals to 1.34 × 10^- 5. Also, we are given the value for the initial concentration of propanoic acid to be 0.441 M.

So, let us delve right into the solution to the question and we will be starting by writting the equation below;

C2H5COOH <--------> H^+ + C2H5COO^-.

Please note that this Reaction is a reversible Reaction.

Therefore, the basic things about acid is its great tendency to release Hydrogen ion in an aqeous solution.

So, we will be taken equation above and correspond it with the time and Concentration.

C2H5COOH <----> H^+ C2H5COO^-.

Initial concentration of the C2H5COOH = 0.441 M and the initial concentration of H^+ and C2H5COO^- are both zero.

So, after a time, t, concentration of C2H5COOH= 0.441 - x and at that time the concentration of H^+ and C2H5COO^- are both x and x respectively.

Hence, Ka = [C2H5COO^-] [H^+]/ C2H5COOH. -----------------------(**).

Therefore, slotting in the values from above into equation (**), we have;

1.34 × 10^-5 = [x] [x]/ [0.441 - x].

1.34 × 10^-5= x^2/ [0.441 - x].

x^2 = 1.34 × 10^-5(0.441) - 1.34 × 10^-5x.

x^2 + 1.34 × 10^-5x - 5.91× 10^-6.

x = 2.4×10^-3.

Hence, the concentration of the propanoic acid at time, t= 0.441 - 2.4 ×10^-3.

==> 0.44 M.

pH = -log [H^+].

Then, we have; pH= - log[2.4× 10^-3].

pH= 2.62.

You might be interested in
An example of a suspension is:<br> A. blood<br> B. gelatin<br> C. muddy water<br> D. milk
Shkiper50 [21]
ANSWER:A.blood

WHY: because it make the most sense and it seem right


Can I get brainly
3 0
3 years ago
Name a chemical that is safe to use in food in small amounts.
Mrrafil [7]

Answer:

Phthalates.

Perfluoroalkyl chemicals (PFCs)

Perchlorate

Artificial food colors

Nitrates and nitrites

Explanation:

I hope this help

4 0
2 years ago
Can someone help with question 16? <br> ASAP
Flura [38]

1. carbon lies in the 2nd period where silicon in the third period.

2. carbon is a non metal whereas silicon is a metalloid.

3. there are only 3 isotopes of carbon and 23 isotopes of silicon

4. size of silicon atom is larger

5. silicon is heavier than carbon.

4 0
3 years ago
Which development was a direct result of the
gladu [14]
"(2) increase in suburbanization" was a direct result of the <span>baby boom that followed World War II, but of course there were other factors that resulted as well. </span>
3 0
3 years ago
Do you think that more elements will be discovered to be added to the periodic table? If so, what kind of elements might these b
sergejj [24]

Answer:

Last week, it was announced that four new elements would be added to the periodic table, a collaboration from researchers in Russia, Japan and the U.S. Elements 113, 115, 117, and 118, which will complete the seventh row, are superheavy elements, that have an atomic number greater than 104.

Explanation:

3 0
1 year ago
Other questions:
  • Carbon disulfide is an important industrial solvent. It is prepared by the reaction of coke with sulfur dioxide. 5 C (s) + 2 SO2
    7·1 answer
  • How many feet are in 3.2 miles?
    11·1 answer
  • Why does water work bad with oil? Explain
    7·2 answers
  • When optically active (S)-2-methylcyclopentanone is treated with aqueous base, the compound loses its optical activity. Explain
    11·1 answer
  • Which of the following will produce a 2 molar solution of copper (II) chloride?
    6·1 answer
  • g in the following three compounds(1,2,3) arrange their relative reactivity towards the reagent CH3Cl / AlCl3. Justify your orde
    15·1 answer
  • Carbon dioxide in the oceans is affecting its pH.<br><br> a. True<br> b. False
    11·1 answer
  • Based on its position in the table, with which other element do you think calcium might react?
    8·1 answer
  • ________ is the force that keeps planets in orbit around the sun
    6·2 answers
  • Speed is defined as __________.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!