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
Viktor [21]
3 years ago
9

The standard cell potential of the following galvanic cell is 1.562 V at 298 K. Zn(s) | Zn2+(aq) || Ag+(aq) | Ag(s) What is the

cell potential of the following galvanic cell at 298 K? Zn(s) | Zn2+(aq, 1.00 × 10–3 M) || Ag+(aq, 0.150 M) | Ag(s)
Chemistry
2 answers:
nata0808 [166]3 years ago
6 0

Answer:

E = 1.602 V

Explanation:

Let's consider the following galvanic cell.

Zn(s) | Zn²⁺(aq, 1.00 × 10⁻³ M) || Ag⁺(aq, 0.150 M) | Ag(s)

The corresponding half-reactions are:

Zn(s) → Zn²⁺(aq, 1.00 × 10⁻³ M) + 2 e⁻

2 Ag⁺(aq, 0.150 M) + 2 e⁻ → 2 Ag(s)

The overall reaction is:

Zn(s) + 2 Ag⁺(aq, 0.150 M) → Zn²⁺(aq, 1.00 × 10⁻³ M) + 2 Ag(s)

We can find the cell potential (E) using the Nernst equation.

E = E° - (0.05916/n) . log Q

where,

E°: standard cell potential

n: moles of electrons transferred

Q: reaction quotient

E = E° - (0.05916/n) . log [Zn²⁺]/[Ag⁺]²

E = 1.562 V - (0.05916/2) . log (1.00 × 10⁻³)/(0.150)²

E = 1.602 V

myrzilka [38]3 years ago
4 0

Answer:

E = 1.602v

Explanation:

Use the Nernst Equation => E(non-std) = E⁰(std) – (0.0592/n)logQc …

             Zn⁰(s) => Zn⁺²(aq) + 2 eˉ

2Ag⁺(aq) + 2eˉ=> 2Ag⁰(s)          

_____________________________

Zn⁰(s) + 2Ag⁺(aq) => Zn⁺²(aq) + 2Ag(s)

Given E⁰ = 1.562v

Qc = [Zn⁺²(aq)]/[Ag⁺]² = (1 x 10ˉ³)/(0.150)² = 0.044

E = E⁰ -(0.0592/n)logQc = 1.562v – (0.0592/2)log(0.044) = 1.602v

You might be interested in
Please help! Will mark Brainliest!
Elina [12.6K]
The answer is D ya know
6 0
3 years ago
Read 2 more answers
Please select the most appropriate answer for the blank: Entropy change is defined only along the path of a(n) ___________ proce
Whitepunk [10]

Entropy change is defined only along the path of an internally reversible process path.

<h3><u>What is Entropy Change </u>?</h3>
  • Entropy is a measure of a thermodynamic system's overall level of disorder or non-uniformity. The thermal energy that a system was unable to use to perform work is known as entropy.
  • Entropy Change is a phenomena that measures how disorder or randomness have changed inside a thermodynamic system.
  • It has to do with how heat or enthalpy is converted during work. More unpredictability in a thermodynamic system indicates high entropy.
  • Entropy is a state function, hence it is independent of the direction that the thermodynamic process takes.
  • The rearranging of atoms and molecules from their initial state causes the change in entropy.
  • This may result in a decrease or rise in the system's disorder or unpredictability, which will, in turn, result in a corresponding drop or increase in entropy.

To view more questions about entropy change, refer to:

brainly.com/question/4526346
#SPJ4

8 0
2 years ago
The following are steps in the process of cloning a mouse. Arrange the steps in the correct order. (8.L.2.1) *
andrezito [222]

Answer:

C

Explanation:

I got A wrong so maybe

8 0
3 years ago
The following reaction plays a key role in the destruction of ozone In the atmosphere:
lys-0071 [83]

Answer:

19.91 J/K

Explanation:

The entropy is a measure of the randomness of the system, and it intends to increase in nature, thus for a spontaneous reaction ΔS > 0.

The entropy variation can be found by:

ΔS = ∑n*S° products - ∑n*S° reactants

Where n is the coefficient of the substance. The value of S° (standard molar entropy) can be found at a thermodynamic table.

S°, Cl(g) = 165.20 J/mol.K

S°, O3(g) = 238.93 J/mol.K

S°, O2(g) = 205.138 J/mol.K

So:

ΔS = (1*205.138 + 1*218.9) - (1*165.20 + 1*238.93)

ΔS = 19.91 J/K

6 0
3 years ago
1 point
Elina [12.6K]

Answer:

84672 J

Explanation:

From the question given above, the following data were obtained:

Height (h) = 72 m

Combined mass (m) = 120 Kg

Acceleration due to gravity (g) = 9.8 m/s²

Energy (E) =?

We can obtain the energy by using the following formula:

E = mgh

Where

E => is the energy.

g => is the acceleration due to gravity

m => is the mass.

h => is the height.

E = 120 × 9.8 × 72

E = 84672 J

Thus, the energy is 84672 J

6 0
3 years ago
Other questions:
  • The concentration of a saturated BaCl2 solution is 1.75 M (mol/liter) and the concentration of a saturated Na2SO4 solution is 2.
    13·1 answer
  • What is the molarity of solution obtained when 5.71 g of sodium carbonate-10-water is dissolved in water and made up to 250.0 cm
    9·1 answer
  • Think critically explain how biotic change in an ecosystem that has flooded?
    15·1 answer
  • Which of the following lists the stages of mitosis in order
    5·2 answers
  • Which of the following statements is true about the periodic table.
    5·2 answers
  • A houseplant is placed on a window sill that gets direct, bright sunlight
    15·1 answer
  • What is the balanced chemical equation for silicon + oxygen?
    14·1 answer
  • Which element has seven energy levels?
    9·1 answer
  • Which of the following statements about Earth's inner core is true?
    13·2 answers
  • How does the speed of a sound wave change based on the density of the medium the wave passes through?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!