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
jek_recluse [69]
3 years ago
5

What is the potential of a cell made up of Zn/Zn2+ and Cu/Cu2+ half-cells at 25ºC if [Zn2+] = 0.25 M and [Cu2+] = 0.15 M?

Chemistry
1 answer:
Juliette [100K]3 years ago
4 0

Answer:

Cell potential = +1.09V

Explanation:

Given:

[Zn2+] = 0.25 M

[Cu2+]  = 0.15 M

In this electrochemical cell, Zn/Zn2+ half cell will serve as the anode and Cu/Cu2+ will act as the cathode.

The two half reactions and the reduction potentials based on the standard reduction potential chart are:

Anode (Oxidation):

Zn(s)\rightarrow Zn^{2+}(aq)+2e^{-}.......E°(anode) = -0.76 V

Cathode(Reduction):

Cu^{2+}(aq)+2e^{-}\rightarrow Cu(s)........E°(cathode)= +0.34 V

Overall reaction:

Zn(s) + Cu^{2+}(aq)\rightarrow Cu(s) + Zn^{2+}(aq)

E_{cell}^{0} =E_{cathode}^{0}-E_{anode}^{0}=0.34-(-0.76)=1.10V

Based on the Nernst equation:

Ecell = E_{cell}^{0}-\frac{0.0592V}{n}log\frac{[Zn2+]}{[Cu2+]}

Ecell = 1.10-\frac{0.0592V}{2}log\frac{[0.25]}{[0.15]}=1.09V

You might be interested in
Fatima is designing an advanced graphics card for a next-generation video game system. She needs to be able to precisely control
belka [17]

Answer:

semiconducting and tellurium

Explanation:

u did the test hope this helps babes

3 0
3 years ago
Read 2 more answers
What do you get when you mix lemons with gunpowder
Nezavi [6.7K]
The answer is Lemonades
3 0
3 years ago
Plants have functions that make them a(n) ?????????? part of the world. ^Insignificant or vital
olga55 [171]
I don't fully understand your question, but I believe that plants have functions that are vital to the planet. They take sunlight, make it into food for themselves, and release oxygen that we need to survive.
5 0
3 years ago
A student is building an electrical circuit. Which material should she choose for wires, and why.
r-ruslan [8.4K]

D. A metal such as copper, because its atom have very mobile electrons         - A-p-e-x verified!

<u>Have a Great Day!</u>

3 0
3 years ago
Hands on mole activity
Amanda [17]

Explanation:

one mole= 6.02x10^23

Everything going from a mole will always be multiplied and everything going into mole will be divided.

4 0
3 years ago
Other questions:
  • How to tell which chair conformation is more stable?
    15·1 answer
  • The air inside a bicycle tire pump has 27 joules of heat conducted away from while 77.9 joules of work done are being done on it
    12·1 answer
  • This type of formula indicates the kind, number, arrangement, and bonds but not the unshared pairs of the atoms in a molecule.
    15·1 answer
  • The density of water at 4 degrees Celsius is 1.00 g/cm cubed at unknown object has density of 7.9 g/cm cubed would you expect it
    11·1 answer
  • The pH of an acidic solution is 2.11. What is [H⁺]
    5·2 answers
  • Balanced Equation:<br> C3H,OH,) + __02 - __CO2 +<br> H20
    12·1 answer
  • Why is heat needed to get a reaction to occur
    8·2 answers
  • Are nerve fibers very thin true or false?
    11·1 answer
  • Which part of the ocean has the lowest temperatures and highest salinity?
    7·1 answer
  • Which one of the following would form a precipitate when mixed with LiOH?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!