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
DIA [1.3K]
3 years ago
9

From standard reduction potentials, calculate the equilibrium constant at 25 ∘c for the reaction 2mno−4(aq)+10cl−(aq)+16h+(aq)→2

mn2+(aq)+5cl2(g)+8h2o(l)
Chemistry
1 answer:
garik1379 [7]3 years ago
6 0

Answer:

\boxed{\text{57.9}}

Explanation:

Step 1. Determine the cell potential

                                                                                 <u>     </u><u>E°/V</u><u>      </u>

2MnO₄⁻ + 16H⁺ + 10e⁻ → 2Mn²⁺+ 8H₂O                      1.507

<u>10Cl⁻ ⟶ 5Cl₂ + 10e⁻                                             </u>     <u>-1.358 27 </u>

2MnO₄⁻ + 10Cl⁻ + 16H⁺⟶ 2Mn²⁺ + 5Cl₂ + 8H₂O      0.149

Step 2. Calculate K

The formula relating K and E is

E = \dfrac{RT}{nF} \ln K

E = 0.149 V

R = 8.314 J·K⁻¹mol⁻¹

T = 25 °C = 298.15 K

n = 10

F = 96 485 C/mol

0.149 = \dfrac{8.314 \times 298.15}{10\times 96 485} \ln K\\\\0.149 = 0.002 570 \ln K\\\\\ln K = \dfrac{0.149}{0.002570} = \textbf{57.9}

The value of the equilibrium constant is \boxed{\textbf{57.9}}

You might be interested in
In the waves lab, you changed ______ to see how it would affect wave speed.
jasenka [17]
Hi there!

I believe the answer is transversal or transverse.

Have a nice night!
~Brooke
4 0
3 years ago
Read 2 more answers
How would you separate food coloring and water?
mr_godi [17]

Heat the water on an oven burner or place it in sunlight for several days to evaporate the water out of the pan. Allow the water to evaporate away and you will be left with the food coloring remaining in the pan.

4 0
3 years ago
Loam is a soil texture that is composed of what
finlep [7]
Loam<span> is </span>soil composed<span> mostly of sand (particle size > 63 µm), silt (particle size > 2 µm), and a smaller amount of clay (particle size < 2 µm)</span>
6 0
4 years ago
The air bags in automobiles were once inflated by nitrogen gas generated by the rapid decomposition of
Basile [38]

Answer:

1.57 mol NaN₃

Explanation:

  • 2 NaN₃ (s) → 2 Na (s) + 3 N₂ (g)

First we <u>use PV=nRT to calculate the number of N₂ moles that need to be produced</u>:

  • P = 1.07 atm
  • V = 53.4 L
  • n = ?
  • R = 0.082 atm·L·mol⁻¹·K⁻¹
  • T = 23.7 °C ⇒ 23.7 + 273.16 = 296.86 K

<u>Inputing the data</u>:

  • 1.07 atm * 53.4 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 296.86

And <u>solving for n</u>:

  • n = 2.35 mol N₂

Finally we <u>convert N₂ moles into NaN₃ moles</u>, using <em>the stoichiometric coefficients of the balanced reaction</em>:

  • 2.35 mol N₂ * \frac{2molNaN_3}{3molN_2} = 1.57 mol NaN₃
4 0
3 years ago
A sample of oxygen gas occupies 3.60 liters at a pressure of 1.00 atm. If the temperature is held constant, what will be the vol
zzz [600]
<h3><u>Answer</u>;</h3>

= 1.44 L

<h3><u>Explanation</u>;</h3>

Boyle's law states that the volume of a fixed mass of a gas is inversely proportional to its pressure at a constant temperature.

Mathematically;

<em>P α 1/V</em>

<em>PV =constant </em>

<em>Thus, P1V1 = P2V2 </em>

<em>P1 = 1.00 atm, V1 = 3.60 liters, V2 = ?, P2 = 2.50 atm</em>

<em>V2 = P1V1/P2</em>

<em>     = (1× 3.6)/2.5 </em>

<em>     = </em><u><em>1.44 L</em></u>

7 0
3 years ago
Other questions:
  • White blood cells can be found in what fluids?
    11·1 answer
  • Fossil evidence, rocks, and the shape of continents provide support for thr theroy of
    9·2 answers
  • Nuclear binding energies for the fusion of a mole of nuclei typically correspond to mass differences on the order of:
    15·1 answer
  • Silver can be electroplated at the cathode of an electrolysis cell by the half-reaction. Ag+(aq)+e−→Ag(s) Part A Silver can be e
    14·1 answer
  • What is a base used in toothpaste?
    10·1 answer
  • How do everyday activities like driving a car and using electricity lead to global warming
    9·1 answer
  • Which element has the greatest density at STP
    13·1 answer
  • One mole of copper has a mass of 63.5 grams. Approximately how many atoms of copper are present in one mole of copper?
    10·1 answer
  • Rank the following compounds in order of increasing solubility in water. Items (4 items) (Drag and drop into the appropriate are
    8·1 answer
  • --IF YOU PUSH SOMETHING WITH STRONG FORCE DOES THE MOTION GO SLOWER
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!