Answer

Verified

402.9k+ views

**Hint:**The answer for this question includes that when two electrodes are combined the one gets reduced at cathode and other gets oxidised at anode and thus the reduction potential is calculated using formula${{E}^{0}}_{cell}=({{E}^{0}}_{c}-{{E}^{0}}_{a})$

**Complete step – by – step solution:**

We have come across the several electrodes and their functions in the electrochemistry part that is in the physical chemistry part. Now, here in the above question the given cells are combined which means that there are two cells that are one anode and the other cathode.

We know that at cathode only reduction takes place always where in the reduction potential increases and at anode oxidation takes place where the reduction potential decreases.

Based on these facts, the cell potential can easily be calculated by,

${{E}^{0}}_{cell}=({{E}^{0}}_{c}-{{E}^{0}}_{a})$

From the data given we have, ${{E}^{0}}_{c}=+0.25V$that is for cathode and for anode${{E}^{0}}_{a}=-2.87V$

Substituting these values, ${{E}^{0}}_{cell}=\left[ 0.25-\left( -2.87 \right) \right]=0.25+2.87$

\[\Rightarrow {{E}^{0}}_{cell}=+3.12V\]

Now, since the reduction potential value of the reference electrode is zero and doesn’t play any role in this, the standard reduction potential of the individual as well as the combined cell remains independent from the reference electrode.

**Therefore, the correct answer is option (B) 3.12V and independent on the reference electrode chosen.**

**Note:**Here make sure that you are familiar with the notations given for some electrodes. Here, standard hydrogen electrode is also given as SHE which does not include any full stop symbols and if questions are based on this, do not be confused.

Recently Updated Pages

How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE

Why Are Noble Gases NonReactive class 11 chemistry CBSE

Let X and Y be the sets of all positive divisors of class 11 maths CBSE

Let x and y be 2 real numbers which satisfy the equations class 11 maths CBSE

Let x 4log 2sqrt 9k 1 + 7 and y dfrac132log 2sqrt5 class 11 maths CBSE

Let x22ax+b20 and x22bx+a20 be two equations Then the class 11 maths CBSE

Trending doubts

Which are the Top 10 Largest Countries of the World?

Fill the blanks with the suitable prepositions 1 The class 9 english CBSE

Write a letter to the principal requesting him to grant class 10 english CBSE

Summary of the poem Where the Mind is Without Fear class 8 english CBSE

Difference Between Plant Cell and Animal Cell

Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE

Give 10 examples for herbs , shrubs , climbers , creepers

Change the following sentences into negative and interrogative class 10 english CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE