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
salantis [7]
3 years ago
9

Calculate the pH of a solution prepared by mixing: (Show your work for these calculations) pk of acetic acid is 4.75 a. two mole

s of sodium acetate with two moles of acetic acid. b. two moles of sodium acetate with one mole of acetic acid.
Chemistry
1 answer:
kupik [55]3 years ago
7 0

Answer:

Explanation:

To calculate pH you need to use Henderson-Hasselbalch formula:

pH = pka + log₁₀ \frac{[A^-]}{[HA]}

Where HA is the acid concentration and A⁻ is the conjugate base concentration.

The equilibrium of acetic acid is:

CH₃COOH ⇄ CH₃COO⁻ + H⁺ pka: 4,75

Where <em>CH₃COOH </em>is the acid and <em>CH₃COO⁻ </em>is the conjugate base.

Thus, Henderson-Hasselbalch formula for acetic acid equilibrium is:

pH = 4,75 + log₁₀ \frac{[CH_{3}COO^-]}{[CH_{3}COOH]}

a) The pH is:

pH = 4,75 + log₁₀ \frac{[2 mol]}{[2 mol]}

<em>pH = 4,75</em>

<em></em>

b) The pH is:

pH = 4,75 + log₁₀ \frac{[2 mol]}{[1mol]}

<em>pH = 5,05</em>

<em></em>

I hope it helps!

You might be interested in
Which of the following statements below correctly describes the parts of an atom that determine the atom's identity and chemical
stich3 [128]

Answer:

B protons determine indentity and valence electrons determine chemical properties.

:)

Explanation:

6 0
3 years ago
Explain why mixing of red paint with white paint does not constitute a chemical reaction even though the product has a different
MArishka [77]

Answer:

Explanation:

In a chemical change through chemical reactions, a new kind of matter forms. When a paint is mixed together, a physical change has occurred and not a chemical change. The different color one perceives is just a mere overlap between the reflected white and red color which produces another hue.

Not all color changes infers a chemical reaction. A paint is a complex mixture on its own.

5 0
3 years ago
A sentence for desert
Tanya [424]
He knew he was in the desert when he saw the dust blowing and a cactus. /// He was trying to desert the field in which was dangerous.
5 0
2 years ago
Read 2 more answers
What would happen if uranium-241 lost 2 protons and 2 neutrons?
kupik [55]
If uranium-241 lost 2 protons and 2 neutrons, then  thorium-237 would be produced. The number beside the element is the mass number which is the sum of protons and neutrons.  If uranium would lose 2 protons and 2 neutrons, then the mass number would decrease by 4 making it 237. Looking in a periodic table, thorium is the element which has a mass number of 237.
5 0
3 years ago
What is the speed of a bird that flies 25 meters in 25 minutes?
nika2105 [10]

Answer:

1mpm(1 meters per minute) Explanation: Speed:Distance/time 25/25=1 plz mark as brainliest

5 0
2 years ago
Read 2 more answers
Other questions:
  • Which of these best describes the difference between the formulas for nitrogen monoxide and nitrogen dioxide? Which of these bes
    9·1 answer
  • the reaction of two gases in a sealed container produces a different gas and the system reaches equilibrium. what change in conc
    11·1 answer
  • Monochlorination of propane yields two constitutional isomers, and dichlorination yields four. Trichlorination yields five const
    6·2 answers
  • PLEASE HELP WILL MARK BRAINLIEST ! Where did the mass of the forest trees come from? What happens to that mass when the forest b
    14·1 answer
  • Explain why a sodium atom and a chlorine atom undergo an iconic bond?
    8·1 answer
  • Which of these terms best describes the following statement?
    14·1 answer
  • What is the weight on earth of a book with a mass of 1.5kg
    9·2 answers
  • What type of organic compounds are sugars and starches?
    7·2 answers
  • If one serving of a packaged frozen dinner contains 5.2 grams of saturated fat and the maximum recommended daily intake of satur
    13·1 answer
  • It 32g of potassium nitrate can be dissolved in 1cm3 of water at 20oC before a saturated solution is obtained, how much potassiu
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!