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
AveGali [126]
3 years ago
5

A certain half-reaction has a standard reduction potential +0.80 V . An engineer proposes using this half-reaction at the anode

of a galvanic cell that must provide at least 0.9 V of electrical power. The cell will operate under standard conditions. Note for advanced students: assume the engineer requires this half-reaction to happen at the anode of the cell.
a. Is there a minimum standard reduction potential that the half-reaction used at the cathode of this cell can have?
b. Is there a maximum standard reduction potential that the half-reaction used at the cathode of this cell can have?
Chemistry
1 answer:
Strike441 [17]3 years ago
8 0

Answer:

a. Minimum 1.70 V

b. There is no maximum.

Explanation:

We can solve this question by remembering that the cell potential is given by the formula

ε⁰ cell = ε⁰ reduction -  ε⁰  oxidation

Now the problem states the cell must provide at least 0.9 V and that the reduction potential of the  oxidized species  0.80 V, thus

ε⁰ reduction -  ε⁰  oxidation ≥  ε⁰ cell

Since ε⁰  oxidation is by definition the negative of ε⁰ reduction , we have

ε⁰ reduction - ( 0.80 V )  ≥  0.90 V

⇒ ε⁰ reduction  ≥ 1.70 V

Therefore,

(a) The minimum standard reduction potential is 1.70 V

(b) There is no maximum standard reduction potential since it is stated in the question that we want to have a cell that provides at leat 0.9 V

You might be interested in
Weight in grams of NaCl
Allisa [31]

Answer: 58.44g

Explanation: The molar mass of NaCl is 58.44g.

7 0
3 years ago
Read 2 more answers
Myth: A dead organism is the same as a nonliving thing in science.<br><br> Fact:<br><br> Evidence:
Ilya [14]

I recently did this assignment!

Instructions: Read each myth (untruth). Reword it to make a factual statement. Then, give two to three reasons why the myth is untrue. Use complete sentences and support your answer with evidence, using your own words.  

________________________________________

Answer:

Myth: A dead organism is the same as a nonliving thing in science.

o Fact: In science, dead is the same as nonliving.

o Evidence: Things that are nonliving never had the characteristics of life, and never will. Things that are dead once did have the characteristics of life, but when they die, they lose some of the characteristics. That is why dead and non-living are NOT the same thing.

Hope this helped!

Have an Amazing day!

~Lola

4 0
3 years ago
Read 2 more answers
Why do reactivity increases on moving from top to bottom in group 2 of modern periodic table?
Nikolay [14]

Answer:

that's because....

group 1 (e.g Na, K) those tend to lose one electron to gain noble gas electron configuration.

they can achieve that by just losing one electron from their outer shell.

as you go down the group 1, element gets bigger in size, which means there is more space between nucleus (which is in center of atom) and electron of outer shell. the more far away they are the less attraction force between them.

so its easier for potassuim to lose one electron than for lithuim.

so that means potassium will easily give up 1 electron to react with non metal or other element therefore it is more reactive than lithuim

but in case of non metal, the opposite happens but simple to understand.

as you go down the group 7 (halogen- Cl, Br, I) element will get bigger therefore force between nucleus and outer electron is getting smaller. they have to gain 1 electron in order to fill the outer shell (to gain noble gas electron configuration.)

as florine is more smaller in size than clorine it is more reactive because florine has more tendency to pull extra electron from metal or other element towards its side. so it easily gain 1 electron to react.

3 0
3 years ago
A square painting has a length of 62 cm.<br><br> What is the area of the painting?<br><br> cm²
svetlana [45]

Answer:3844 cm^2

Explanation:

62 squared since it is a square, and area is base times height

3 0
3 years ago
Dust particles enter the atmosphere when wind picks them up off the ground and carries the upward.
goldfiish [28.3K]
The statement seems to be true, as per my knowledge.

Hope I helped!! xx
6 0
3 years ago
Other questions:
  • A mixture of gases with a pressure of 800 mmhg contains 10% oxygen and 90% nitrogen by volume. what is the partial pressure of t
    13·2 answers
  • A compound is found to be 30.45% n and 69.55 % o by mass. if 1.63 g of this compound occupy 389 ml at 0.00°c and 775 mm hg, what
    13·1 answer
  • A certain shade of blue has a frequency of 7.17 × 1014 hz. what is the energy of exactly one photon of this light?
    10·1 answer
  • Earth has one moon and mars has two moons. how many more moons are found around the outer planets than the inner planets?
    12·2 answers
  • Formulae for calculating number of moles​
    5·1 answer
  • PLEASE HELP QUICK
    15·1 answer
  • Why do non-metal aroms form covalent bonds e.g. H2O​
    5·1 answer
  • Cruising down the street in my 6-4
    9·1 answer
  • Which type of energy is the tree changing the light energy into?
    13·2 answers
  • What volume is occupied by 22.1 g of O2 at 52°C and a pressure of 1.63 atm?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!