Test: Nernst Equation, Conductance and Conductivity - JEE MCQ

An electrochemical reaction takes place when the cations and the anions present in the electrolyte solution travel to the respective electrodes and either give up or take up electrons. As the ions travel, they carry a certain charge and in this process, electricity is produced.
But all these processes will only be possible or be spontaneous when the Gibbs Free energy of the medium is negative.

The correct answer is option A

The cells will be arranged as such 9 : 4: 1.

Explanation:

• The equilibrium constant that is used here is represented with k.

• The smaller the value of k the higher will be the value of energy according to Gibbs.

• So, 1 has the highest Gibbs free energy while 9 has the least.

• This is the energy of a chemical reaction.

• It is represented by G.

The correct answer is Option C.

Reactions with a negative ∆G release energy, which means that they can proceed without an energy input (are spontaneous). In contrast, reactions with a positive ∆G need an input of energy in order to take place (are non-spontaneous). Reactions with a positive ∆H and negative ∆S are non-spontaneous at all temperatures.

Hence

When

coulomb

Higher the value of reduction potential stronger will be the oxidising hence based on the given values will be strongest oxidizing agent.

∵ Q = i × t

Now since 96500 C liberates of
of

coulomb deposited wt. of
coulomb deposited wt. of
So, statement is true but is false. is false because mass of substance deposited is directly proportional to the quantity of electricity.