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
ira [324]
3 years ago
5

Write the Henderson-Hasselbalch equation for a solution of formic acid. Calculate the quotient [HCO2]/[HCO2H] at (a) pH 3.000; (

b) pH 3.744; (c) pH 4.000.
Chemistry
1 answer:
Elena L [17]3 years ago
3 0

Answer:

a. 0.182

b. 1.009

c. 1.819

Explanation:

Henderson-Hasselbach equation is:

pH = pKa + log [salt / acid]

Let's replace the formula by the given values.

a. 3 = 3.74 + log [salt / acid]

3 - 3.74 = log [salt / acid]

-0.74 = log [salt / acid]

10⁻⁰'⁷⁴ = 0.182

b. 3.744 = 3.74 + log [salt / acid]

3.744 - 3.74 = log [salt / acid]

0.004 = log [salt / acid]

10⁰'⁰⁰⁴ = 1.009

c. 4 = 3.74 + log [salt / acid]

4 - 3.74 = log [salt / acid]

0.26 = log [salt / acid]

10⁰'²⁶ = 1.819

You might be interested in
How long does it take water to turn into ice in the freezer?
vagabundo [1.1K]
It would typically be around 5000 seconds(83.33) minutes for the water to freeze.
3 0
2 years ago
The weight of the body in the air is .... the weight of the submerged body
stira [4]

Answer:

the correct answer is option 'b': More than

Explanation:

The 2 situations are represented in the attached figures below

When an object is placed in air it is acted upon by force of gravity of earth which is measured as weight of the object.

While as when any object is submerged partially or completely in any fluid the fluid exerts a force in upward direction and this force is known as force of buoyancy and it's magnitude is given by Archimedes law as equal to the weight of the fluid that the body displaces, hence the effective force in the downward direction direction thus the apparent weight of the object in water decreases.

4 0
3 years ago
The specific heat of aluminum is 0.897 J/g•°C. Which equation would you use to calculate the amount of heat needed to raise the
docker41 [41]
Q = 0.75 g x 0.897 J/g•°C x 22°C
6 0
3 years ago
How does the Theory of Plate Tectonics explain the location of same fossils at Points A and B?
Artemon [7]
Yellow because Pangea all the continents were together
5 0
3 years ago
The area that includes everything between the cell membrane and the nucleus of a cell is called the
kolbaska11 [484]

Answer:

Cytoplasm.

Explanation:

Please mark as Brainliest! :)

8 0
3 years ago
Read 2 more answers
Other questions:
  • The pressure inside a tire is measured as 28.0 . What is its pressure in ? 1 pound = 4.45 newtons 1 inch2 = 6.45 centimeters2 Ex
    7·2 answers
  • The level of water in an olympic size swimming pool (50.0 meters long, 25.0 meters wide, and about 2.00 meters deep) needs to be
    8·1 answer
  • Ethanol boils at 78.4 °C with \DeltaΔHvap = 38.6 kJ/mol. A 0.200-mol sample of ethanol is heated from some colder temperature up
    11·1 answer
  • How to calculate the amount of Moles of calcium carbonate<br> Show work
    9·1 answer
  • Why is graphite used as a lubricant
    14·2 answers
  • Which one are only compounds? *
    11·2 answers
  • Explain how atomic number relates to the number of particles in an atom’s nucleus.
    12·1 answer
  • The following illustration shows a tool that can be used to separate elements of certain mixtures. The picture is a magnet. This
    8·1 answer
  • Need help ASAP!!!!!!
    6·1 answer
  • Describe the difference between polar covalent bonds and nonpolar covalent bonds using these two molecules - H2 and HCl. Which m
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!