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
Kisachek [45]
3 years ago
6

Suppose that some FeSCN2+ is added to the above solution to shift the equilibrium. When equilibrium is re-established, the follo

wing concentrations are found.
A) [Fe3+ ] = 8.12 ✕ 10−3 M,
B) [SCN − ] = 7.84 ✕ 10−3 M
What is the concentration of FeSCN2+ in the new equilibrium mixture?
Hint: Use your value of K to solve for the unknown concentration.
Chemistry
1 answer:
kiruha [24]3 years ago
7 0

Explanation:

The given reaction equation will be as follows.

          [FeSCN^{2+}] \rightleftharpoons [Fe^{3+}] + [SCN^{-}]

Let is assume that at equilibrium the concentrations of given species are as follows.

        [Fe^{3+}] = 8.17 \times 10^{-3} M

        [SCN^{-}] = 8.60 \times 10^{-3} M

        [FeSCN^{2+}] = 6.25 \times 10^{-2} M

Now, first calculate the value of K_{eq} as follows.

     K_{eq} = \frac{[Fe^{3+}][SCN^{-}]}{[FeSCN^{2+}]}

              = \frac{8.17 \times 10^{-3} \times 8.60 \times 10^{-3}}{6.25 \times 10^{-2}}

              = 11.24 \times 10^{-4}

Now, according to the concentration values at the re-established equilibrium the value for [FeSCN^{2+}] will be calculated as follows.

             K_{eq} = \frac{[Fe^{3+}][SCN^{-}]}{[FeSCN^{2+}]}

        11.24 \times 10^{-4} = \frac{8.12 \times 10^{-3} \times 7.84 \times 10^{-3}}{[FeSCN^{2+}]}

         [FeSCN^{2+}] = 5.66 \times 10^{-2} M

Thus, we can conclude that the concentration of [FeSCN^{2+}] in the new equilibrium mixture is 5.66 \times 10^{-2} M.

You might be interested in
What is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? As air
Marina86 [1]

We need to know the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure.

The relationship is: As air pressure in an area increases, the density of the gas particles in that area increases.

For any gaseous substance, density of gas is directly proportional to pressure of gas.

This can be explained from idial gas edquation:

PV=nRT

PV=\frac{w}{M}RT [where, w= mass of substance, M=molar mass of substance]

PM=\frac{w}{V}RT

PM=dRT [where, d=density of thesubstance]

So, for a particular gaseous substance (whose molar mass is known), at particular temperature, pressure is directly related to density of gaseous substance.

Therefore, as air pressure in an area increases, the density of the gas particles in that area increases.

3 0
3 years ago
A sample of an ideal gas at 1.00 atm and a volume of 1.84 L was placed in a weighted balloon and dropped into the ocean. As the
Inessa05 [86]

Answer:

0.0613 L

Explanation:

Given data

  • Initial pressure (P₁): 1.00 atm
  • Initial volume (V₁): 1.84 L
  • Final pressure (P₂): 30.0 atm
  • Final volume (V₂): ?

Since we are dealing with an ideal gas, we can calculate the final volume using Boyle's law.

P₁ × V₁ = P₂ × V₂

V₂ = P₁ × V₁ / P₂

V₂ = 1.00 atm × 1.84 L / 30.0 atm

V₂ = 0.0613 L

6 0
3 years ago
Name the element which lies in group IA and 3rd period. What is the valency of it and why?​
Jlenok [28]

Answer:

Bro I got notification of this question but soory I don't know the answer Hope you understand me

4 0
3 years ago
Read 2 more answers
State the number of neutrons in an atom of Ne-20 and the number of neutrons in an atom of Ne-22. choose two answers * 1 point Ne
saveliy_v [14]

Answer:

Ne 20: 10

and

Ne 22: 12

Explanation:

Ne-20:

N = A - Z = 20 - 10 = 10 neutrons

Ne-22:

N = A - Z = 22 - 10 = 12 neutrons

N: number of neutrons

A: mass number

Z: atomic number

8 0
3 years ago
Which 'tropic' is located in the southern hemisphere?
butalik [34]
Its Southern Hemisphere counterpart, marking the most southerly position at which the Sun can be directly overhead, is the Tropic of Capricorn. These tropics are two of the five major circles of latitude that mark maps of the Earth, besides the Arctic and Antarctic Circles and the Equator.
6 0
3 years ago
Other questions:
  • Which statement describes what is gained or lost during radioactive decay?
    6·1 answer
  • There are four equal-sized bowls with equal amounts of milk. Bowl A is covered, and the milk is at room temperature. Bowl B is u
    7·1 answer
  • Hi can you slove this please. ..​
    15·1 answer
  • How is the scientific meaning of salt different from the common meaning of salt
    10·1 answer
  • Which of these terms refers to matter that could be heterogeneous?
    11·1 answer
  • Bilang mga dalaga at binata, paano nyo lilinangin ang mga aspeto ng tao na inyong taglay?​
    15·2 answers
  • How do scientists think that gravity affected the formation of our solar system?
    13·1 answer
  • What is 9872002 in scientific notation?
    8·2 answers
  • 672cm x 11cm / 6.3cm^3
    8·2 answers
  • The total pressure of gas collected over water is 725.0 mmHg and the temperature is 18.5 C what is the pressure of hydrogen gas
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!