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
aev [14]
3 years ago
9

Assume that the reaction for the formation of gaseous hydrogen fluoride from hydrogen and fluorine has an equilibrium constant o

f 1.15 X 102 at a certain temperature. In a particular experiment, 3.00 mole of each component was added to a 1.50 L flask. Calculate the equilibrium concentrations of all species.
Chemistry
1 answer:
Zina [86]3 years ago
8 0

Answer:

The equilibrium concentrations of all species :

[H_2]= 0.314 M

[F_2]=0.314 M

[HF]=3.372 M

Explanation:

Moles of hydrogen gas = 3.00 mole

Concentration of hydrogen gas = [H_2]=\frac{3.00 mol}{1.5 L}=2.0 M

Moles of fluorine gas = 3.00 mole

Concentration of fluorine gas = [F_2]=\frac{3.00 mol}{1.5 L}=2.0 M

Given the equilibrium constant of the reaction = K_c=1.15\times 10^2

H_2(g)+F_2(g)\rightleftharpoons 2HF(g)

Initial

2.0 M  2.0 M     0

At equilibrium

(2.0-x)M  (2.0 -x)M         2x

An expression of K_c is given by :

K_c=\frac{[HF]^2}{[H_2][F_2]}

1.15\times 10^2=\frac{(2x)^2}{(2.0-x)(2.0 -x)}

On solving for x , we get :

x = 1.686 M

The equilibrium concentrations of all species :

[H_2]=(2.0 -1.686)M = 0.314 M

[F_2]=(2.0 -1.686)M = 0.314 M

[HF]=(2\times 1.686)M = 3.372 M

You might be interested in
There are ________ unpaired electrons in the Lewis symbol for a nitride ion.
Anna71 [15]

Answer:

There are no unpaired electrons.

Explanation:

There are  no unpaired electrons in the Lewis symbol for a nitride ion({ N }^{ 3- }).The nitride ion has a charge of -3. The negative charge on the Nitride ion indicates a gain in electrons . Nitrogen has 5 valence electrons that is the number of electrons that are in its outer shell .The total number of electrons that the nitride ion has is equal to 5+3 = 8 electrons . Electrons usually appear in pairs and obey the octet rule therefore the nitride ion has four electron pairs no unpaired electrons.

5 0
3 years ago
Which aqueous solution has the highest boiling point?a. 0.20 M NaClb. 0.10 M CaCl2c. 0.1 M Ga2(SO4)3d. 0.2 M C6H12O6
abruzzese [7]

Answer:

c. 0.1 M Ga₂(SO₄)₃

Explanation:

The boiling point increasing of a solvent due the addition of a solute follows the formula:

ΔT = K*m*i

<em>Where K is boiling point increasing constant (Depends of the solute), m is molality = molarity when solvent is water, and i is Van't Hoff factor.</em>

<em />

That means the option with the higher m*i will be the solution with the highest boiling point:

a. NaCl has i = 2 (NaCl dissociates in Na⁺ and Cl⁻ ions).

m* i = 0.20*2 = 0.4

b. CaCl₂; i = 3. 3 ions.

m*i= 0.10M * 3 = 0.3

c. Ga₂(SO₄)₃ dissolves in 5 ions. i = 5

m*i = 0.10M*55 = 0.5

d. C₆H₁₂O₆ has i = 1:

m*i = 0.2M*1 = 0.2

The solution with highest boiling point is:

<h3>c. 0.1 M Ga₂(SO₄)₃</h3>
3 0
3 years ago
Which of the following describes a solution of 1 gram of salt dissolved in 500 mL of water?
Greeley [361]

Answer:

B

Explanation:

Homogeneous= all particles are dissolved thoroughly

Solute= 1 gram of salt

Solvent= 500 mL water

8 0
3 years ago
Identify the molecule with the strongest intermolecular force.
wel

Answer:

C6H6 has the strongest intermolecular force

i think

6 0
3 years ago
Read 2 more answers
If greenhouse gases in the atmosphere act like a blanket around the Earth, how is this "blanket” being changed by human activiti
never [62]

Answer:

It is getting thicker and keeping the Earth warmer.

4 0
2 years ago
Read 2 more answers
Other questions:
  • What is the term for the force exerted on an object by another object?
    5·1 answer
  • An organic liquid is a mixture of methyl alcohol (CH3OH) and ethyl alcohol (C2H5OH). A 0.220-g sample of the liquid is burned in
    7·1 answer
  • Which is better?<br>Sexual Reproduction or Asexual Reproduction
    14·1 answer
  • What happens to a person's weight on smaller and larger planets?
    7·1 answer
  • If this were a frictionless plane, what would be the ideal mechanical advantage?
    8·1 answer
  • Importance of good health paragraph <br>​
    14·2 answers
  • When you heat a liquid, the molecules spread farther apart and the liquid expands, and when you cool a liquid, the molecules get
    14·2 answers
  • An organism's unique characteristics affect the individual's ability to survive in its environment. true or false
    13·2 answers
  • What is the result of the following calculation? Record to the correct number of significant figures. 7.94 g + 0.0132 g = ?
    5·1 answer
  • Reaction intermediates differ from activated complexes in that A. they are stable molecules with normal bonds and are frequently
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!