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quester [9]
3 years ago
9

Which statement about oxidation and reduction in a voltaic cell is true? A. Both oxidation and reduction occur at the anode. B.

Both oxidation and reduction occur at the cathode. C. Oxidation occurs at the anode and reduction occurs at the cathode. D. Oxidation occurs at the cathode and reduction occurs at the anode.
Chemistry
1 answer:
Anettt [7]3 years ago
6 0

Answer:

C. Oxidation occurs at the anode and reduction occurs at the cathode.

Choice number third is the correct option for the given question

Explanation:

Copper and silver nitrate are the two components that form a voltaic cell. These are the two main ingredients which make the Redox reaction possible. The dog reaction that is taking place result in development of charge.

Since copper here is the anode in the reaction oxidation happens here by the solutionAgNO_3 is cathode this is where reduction takes place.

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Please answer this question ASAP. This is on a homework assignment that is due tonight!! Thank you in advance! A voltaic cell em
worty [1.4K]
Ecell = E°cell - RT/vF * lnQ

R is the gas constant: 8.3145 J/Kmol
T is the temperature in kelvin: 273.15K = 0°C, 25°C = 298.15K
v is the amount of electrons, which in your example seems to be six (I'm not totally sure)
F is the Faradays constant: 96485 J/Vmol (not sure about the mol)
Q is the concentration of products divided by the concentration of reactants, in which we ignore pure solids and liquids: [Mg2+]³ / [Fe3+]²

Standard conditions is 1 mol, at 298.15K and 1 atm

To find E°cell, you have to look up the reduction potensials of Fe3+ and Mg2+, and solve like this:

E°cell = cathode - anode

Cathode is where the reduction happens, so that would be the element that recieves electrons. Anode is where the oxidation happens, so that would be the element that donates electrons. In your example Fe3+ recieves electrons, and should be considered as cathode in the equation above. 

When you have found E°cell, you can just solve with the numbers I gave you. 
7 0
3 years ago
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Becoming a physicist involves studying various subject matter, besides physics what subjects should be studied in college?​
atroni [7]

Answer:

Crystallography, nanotechnology, biophotonics, condensed matter theory and solar energy.

Explanation:

Some other subjects that should be studied in college are crystallography, nanotechnology, biophotonics, condensed matter theory ,and solar energy. These may help you in the studying of a physicist.

Hope it helped brainiest plz

3 0
3 years ago
In a longitudinal wave, the _________ is the distance from one compression to the next compression or from one rarefaction to th
Andreyy89
The me drained is it
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4 years ago
Which of the following statements is true about Planck's Law?
iren [92.7K]
B) The frequency of the emitted light is directly proportional to the energy given off by the electrons. 

5 0
4 years ago
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Calculate the molar mass of a 2.89 g gas at 346 ml, a temperature of 28.3 degrees Celsius, and a pressure of 760 mmHg.
malfutka [58]

The molar mass of gas = 206.36 g/mol

<h3>Further explanation</h3>

In general, the gas equation can be written

\large{\boxed{\bold{PV=nRT}}}

where

P = pressure, atm

V = volume, liter

n = number of moles

R = gas constant = 0.082 l.atm / mol K

T = temperature, Kelvin

mass (m)= 2.89 g

volume(V) = 346 ml = 0.346 L

T = 28.3 C + 273 = 301.3 K

P = 760 mmHg=1 atm

The molar mass (M) :

\tt PV=\dfrac{m}{M}RT\\\\M=\dfrac{mRT}{PV}\\\\M=\dfrac{2.89\times 0.082\times 301.3}{1\times 0.346}\\\\M=206.36~g/mol

8 0
3 years ago
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