All of the following are conditions in which the mantle will melt and liquefy EXCEPT ____________________________. a significant
2 answers:
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<u>Answer:</u> The EMF of the cell is coming when the cell having diluted concentration is getting oxidized.
<u>Explanation:</u>
We are given a cell which contains two half cells. This means that the standard electrode potential of the cell will be 0.
For a reaction to be spontaneous, the EMF of the cell must be positive. If the EMF of the cell is negative, the reaction will be non-spontaneous and will not take place.
For a reaction to be spontaneous, the diluted cell must get oxidized.
The half reaction for the given cell follows:
<u>Oxidation half reaction:</u>
<u>Reduction half reaction:</u>
Net reaction:
To calculate the EMF of the cell, we use Nernst equation:
where,
n = number of electrons in oxidation-reduction reaction = 2
= ?
=
= 2.0 M
Putting values in above equation, we get:
Hence, the EMF of the cell is coming when the cell having diluted concentration is getting oxidized.
Answer:
Explanation:
<u>Given the following data;</u>
Initial volume = 400 mL
Final volume = 2000 mL
Initial pressure = 3 atm
To find the final pressure P2, we would use Boyles' law.
Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.
Mathematically, Boyles law is given by;
Substituting into the equation, we have;