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
Tomtit [17]
3 years ago
5

Enough of a monoprotic weak acid is dissolved in water to produce a 0.0118 M solution. The pH of the resulting solution is 2.32

. Calculate the Ka for the acid.
Chemistry
1 answer:
ser-zykov [4K]3 years ago
4 0

Answer:

1.94 × 10⁻³

Explanation:

Step 1: Calculate the concentration of H⁺ ions

We will use the definition of pH.

pH = -log [H⁺]

[H⁺] = antilog -pH = antilog -2.32 = 4.79 × 10⁻³ M

Step 2: Calculate the acid dissociation constant (Ka) of the acid

For a monoprotic weak acid, whose concentration (Ca) is 0.0118 M, we can use the following expression.

Ka = [H⁺]²/Ca

Ka = (4.79 × 10⁻³)²/0.0118 = 1.94 × 10⁻³

You might be interested in
Extend your thinking: The slow decay of radioactive materials can be used to find the age of rocks, fossils, and archaeological
lisov135 [29]

The age in years of the Egyptian papyrus, the Aboriginal charcoal, the Mayan headdress, and the Neanderthal skull are 4000 years, 13106.5years , 2040 years, and 30353 years respectively.

<h3>What is the half-life of a radioactive material?</h3>

The half-life of a radioactive material is the time taken for half the atoms present in the material to decay or disintegrate.

The half-life, t_\frac{1}{2}, the age, t, and amount remaining, A_{r}, of a radioactive material are related by the formula below:

  • t = \frac{t_\frac{1}{2}*A_{r}}{-ln2}

Half-life of carbon-14 = 6000 years

For the Egyptian papyrus with 63% of its original carbon-14 atoms:t = \frac{6000*0.63}{-0.63} = 4000\:years

For the Aboriginal charcoal with 22% of its original carbon-14 atoms:

t = \frac{6000*0.22}{-0.63} = 13106.5\:years

For the Mayan headdress with 79% of its original carbon-14 atoms:

t = \frac{6000*0.79}{-0.63} = 2040\:years

Neanderthal skull with 3% of its original carbon-14 atoms:

t = \frac{6000*0.03}{-0.63} = 30353\:years

Therefore, the age in years of the Egyptian papyrus, the Aboriginal charcoal, the Mayan headdress, and the Neanderthal skull are 4000 years, 13106.5years , 2040 years, and 30353 years respectively.

Learn more about half-life at: brainly.com/question/26689704

#SPJ1

6 0
2 years ago
Based in the rules of John Dalton, what is a possible hypothesis that could be tested in the Atomic Theory lab?
marshall27 [118]
<span>After many experiments and many different approaches to the question, the scientist may be able to develop a theory. The theory explains why nature behaves in the way described by the natural law. It answers not only the original question, but also any other questions that were raised during the process. The theory also predicts the results of further experiments, which is how it is checked. Theories are not the end of the process.</span>
8 0
3 years ago
Read 2 more answers
What is the function of a Mitochondrion​
gladu [14]

Answer:

Explanation:

Function. The mitochondrion is the site of ATP synthesis for the cell. The number of mitochondria found in a cell are therefore a good indicator of the cell's rate of metabolic activity; cells which are very metabolically active, such as hepatocytes, will have many mitochondria.

6 0
2 years ago
Which population increases the amount of soil nutrients available to plants?
Hitman42 [59]
The population tha increases the amount of soil nutrients available to plants is D) bees that help spread pollen from one plant to another.
5 0
3 years ago
Read 2 more answers
An aqueous solution contains
ivolga24 [154]

Answer:

32.7

Explanation:

I just did it and got it right

4 0
3 years ago
Other questions:
  • How is the Nazca plate moving in relation to the Pacific plate?
    15·2 answers
  • HELP!!! PLEASE!! I don't know this one question!!!
    9·1 answer
  • The atomic number of Re is 75. The atomic mass of one of its isotopes is 186. How many neutrons are in an atom of this isotope?
    7·1 answer
  • Using the formula for velocity shown below, what is the average velocity of a car that traveled 100 miles south of where it bega
    6·1 answer
  • In a certain organic compound, one of the carbon atoms is bonded to three atoms. One of these is a carbon atom and the other two
    5·2 answers
  • An electrochemical cell is constructed using electrodes with the following half-cell reactions.
    8·1 answer
  • Which of these illustration shows isotopes of the elements boron b
    9·1 answer
  • What happens when a piece of Mg ribbon is burnt? Name the
    10·1 answer
  • Could the Periodic Table be arranged differently?
    12·2 answers
  • How many liters will 2.76 mol CO2 occupy?<br> 2.76 mol<br> II
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!