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
Lisa [10]
2 years ago
12

When H2 and CO2 react, acetic acid can be formed spontaneously while the production of formaldehyde requires an input of energy.

Which of the following conclusions may be drawn from this observation?
a. More heat is released when formaldehyde is produced compared to the production of acetic acid.
b. Compared to the reactants from which it is formed, formaldehyde has more potential energy than does acetic acid.
c. Entropy decreases when acetic acid is produced and increases when formaldehyde is produced.
d. The mineral catalyst involved in acetic acid production provides energy to make the reaction spontaneous.

Chemistry
1 answer:
monitta2 years ago
7 0

Answer:

Compared to the reactants from which it is formed, formaldehyde has more potential energy than does acetic acid.

Explanation:

Some atoms tend to attain a minimum potential energy when atoms interact in certain ways. This interaction lowers the potential energy of the system involving the two atoms. This minimum energy point usually refer to overlap between atoms in a covalent bond. The closer the nuclei of the two atoms, the lower the potential energy of the bonded interaction.

If a specie takes more time to form, then it has a lower potential energy, its minima occurs much lower in the plot shown in the image attached.

You might be interested in
Examples:
Lostsunrise [7]

Uhhhhhhhhhhhhhh wut, can you rewrite it?

6 0
3 years ago
How can flood water affect the public drinking water supply?
storchak [24]
Flood water will ruin the clean water. This will cause the water to be undrinkable. Flood water will get into homes and ruin roads. Even though it may seem like it is doing a good thing by adding more water, the water is not filtered and clean for drinking.
8 0
3 years ago
A block of iridium has a length of 4.20 cm, a width of 3.80 cm and a height
frutty [35]

Answer:

d = 20.89 g/cm³

Explanation:

Given data:

Length of block = 4.20 cm

width of block = 3.80 cm

Height of block = 5.40 cm

Mass of block = 1800 g

Density of block = ?

Solution:

First of all we will calculate the volume.

V = l×w×h

V = 4.20 cm ×3.80 cm× 5.40 cm

v = 86.18 cm³

Density:

d =m/v

d =1800 g/ 86.18 cm³

d = 20.89 g/cm³

7 0
3 years ago
Be sure to answer all parts. Acetone is one of the most important solvents in organic chemistry. It is used to dissolve everythi
zimovet [89]

Answer:

a) 79.66 seconds is the half-life of the reaction.

b) It will take 4.776\times 10^1 seconds for 34% of a sample of an acetone to decompose.

c) It will take 2.537\times 10^2 seconds for 89% of a sample of an acetone to decompose.

Explanation:

The decomposition of acetone follows first order kinetics

The rate constant of the reaction = k = 8.7\times 10^{-3} s^{-1}

a)

Half life of the reaction = t_{1/2}

For the first order kinetic half life is related to k by :

t_{1/2}=\frac{0.693}{k}

t_{1/2}=\frac{0.693}{8.7\times 10^{-3} s^{-1}}=79.66 s=7.966\times 10^1 s

79.66 seconds is the half-life of the reaction.

b)

Let the initial concentration of acetone be = [A_o]

Final concentration of acetone left after t time = [A]

A=(100\%-34\%)[A_o]=66\%[A_o]=0.66[A_o]

For the first order kinetic :

[A]=[A_o]\times e^{-kt}

0.66[A_o]=[A_o]\times e^{-8.7\times 10^{-3} s^{-1}\times t}

Solving for t;

t=47.76 s

It will take 47.76 seconds for 34% of a sample of an acetone to decompose.

c)

Let the initial concentration of acetone be = [A_o]

Final concentration of acetone left after t time = [A]

A=(100\%-89\%)[A-o]=11\%[A_o]=0.11[A_o]

For the first order kinetic :

[A]=[A_o]\times e^{-kt}

0.11[A_o]=[A_o]\times e^{-8.7\times 10^{-3} s^{-1}\times t}

Solving for t;

t=2.537\times 10^2 s

It will take 2.537\times 10^2 seconds for 89% of a sample of an acetone to decompose.

3 0
3 years ago
QUESTION 1 How are the nervous systems of a flatworm and a fish different? One responds to stimuli in the environment and the ot
Elis [28]
1, <span>One has a brain, with a forebrain, a midbrain, and a hindbrain, the other has ganglia which integration can occur

2, fish

3, flatworm

4, ions

5, </span><span>sensors</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • How do you work out the number of neutrons in an atom?
    5·1 answer
  • What four things affect the tides
    10·1 answer
  • Water contained in a reservoir is controlled by a dam. The energy of the trapped water is
    6·1 answer
  • Where on the table would a group's<br> ionization energy be the greatest?
    9·1 answer
  • How to 45 m/s converted to km/hr
    9·1 answer
  • List three factors thatinfluence the rate at whick dissolving occurs
    8·1 answer
  • True or false: Fungi are able to carry out photosynthesis, similar to plants
    7·2 answers
  • Examine the chemical reaction and lab scenario.
    8·1 answer
  • What are the different chemical properties of the element Cobalt?
    10·1 answer
  • PLEASE HELP ME ASAP PLEASE!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!