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]
4 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]4 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
How can you figure out the properties of a star?
Firlakuza [10]

Answer:

Measuring distances to stars through stellar parallax. Measuring distances to stars through the moving cluster method. Astronomers measure the temperature of a star by looking at the star's color and its spectrum. The apparent brightness of a star tells how bright it seems to us

Explanation:

3 0
3 years ago
Read 2 more answers
Describe the three main types of plate boundary interactions:
bulgar [2K]

Answer:

In the explanation

Explanation:

Divergent: When two plates are diverging from each other, meaning that the two plates are moving away from each other. Events that may occur include ridges or rifts.

Convergent: When two plates are moving towards each other.

If a continental plate and an oceanic plate are converging, the oceanic plate would slide underneath the continental plate since it is thinner. This would result in subduction, which means that part of the oceanic plate would hang underneath the continental plate, where magma can melt the hanging part.

If two continental plates are converging, the crash would result in mountains or volcanic activity. Magma could rise and rush from the crack. There would be a bump in these tectonic plates.

Transform: When two plates are sliding past each other. Earthquakes can occur when the plates are sliding. When an oceanic plate is involved, the movement of the plates could cause a tsunami as well. The water above the transform fault could rise, and grow bigger and bigger. The 2011 Japan Tsunami is a good example of this.

Hope this helps!

5 0
3 years ago
What is a neutron and what charge does it have
Gnoma [55]
It’s a polyatomic and it has a negative charge. It’s located in the nucleus of the atom, along with the protons.
5 0
4 years ago
Read 2 more answers
Why did the plant that could not photosynthesize stop growing?
Snowcat [4.5K]

Answer:

Plants get their nutrients from photosynthesis, and those nutrients in turn help them grow. The plant stopped growing because it was unable to obtain its vital nutrients.

Explanation:

5 0
3 years ago
MgX2 Very low density Highly reactive Diatomic Using the periodic table, determine which element these characteristics MOST LIKE
photoshop1234 [79]
Oxygen, fluorine and iodine are diatomic elements. Flourine is more reactive than the other two because it is the closest away to filling its outer layer of electrons and becoming stable like a noble gas.
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the mass percent of hydrogen in hexanal?
    15·2 answers
  • Select the atoms that are likely to gain electrons to form anions:
    10·1 answer
  • Which compound is insoluble in water?<br> (1) BaSO4 (3) KClO3<br> (2) CaCrO4 (4) Na2S
    15·2 answers
  • Why are covalently bonded materials generally less dense than metallically or ionically bonded ones
    8·1 answer
  • On a periodic table, element names are represented by: A. numbers B. chemical symbols C. pictures D. matter
    8·2 answers
  • What stacks membranes that packages chemicals
    14·1 answer
  • Calculate the OH for a solution that is pH 6.47
    15·1 answer
  • Tissues are grouped together to form varius what?
    8·1 answer
  • What are the properties of elements??​
    15·2 answers
  • If you are running at top speed and try to stop suddenly, what happens?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!