हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Which of the following statement is not correct about an inert electrode in a cell?

Advertisements
Advertisements

प्रश्न

Which of the following statement is not correct about an inert electrode in a cell?

विकल्प

  • It does not participate in the cell reaction.

  • It provides surface either for oxidation or for reduction reaction.

  • It provides surface for conduction of electrons.

  • It provides surface for redox reaction.

MCQ
Advertisements

उत्तर

It provides surface for redox reaction.

Explanation:

Inert electrode does not participate in redox reaction and acts only as source or sink for electrons. It provides surface either for oxidation or for reduction reaction.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Electrochemistry - Exercises [पृष्ठ ३४]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 3 Electrochemistry
Exercises | Q I. 5. | पृष्ठ ३४

संबंधित प्रश्न

Define the following term:

Fuel cell


A solution of Cu(NO3)2 is electrolyzed between platinum electrodes using 0.1 Faraday electricity. How many moles of Cu will be deposited at the cathode?


How many faradays of electricity are required for the following reaction to occur

\[\ce{MnO^-_4 -> Mn^2+}\]


Consider the change in the oxidation state of Bromine corresponding to different emf values as shown in the expression below:

\[\ce{BrO^-_4 ->[1.82 V] BrO^-_3 ->[1.5 V] HBrO ->[1.595 V] Br2 ->[1.0652 V] Br^-}\]

Then the species undergoing disproportionation is:


Two metals M1 and M2 have reduction potential values of −xV and +yV respectively. Which will liberate H2 and H2SO4.


The quantity of charge required to obtain one mole of aluminium from Al2O3 is ______.


`E_(cell)^Θ` for some half cell reactions are given below. On the basis of these mark the correct answer.

(a) \[\ce{H^{+} (aq) + e^{-} -> 1/2 H_2 (g); E^Θ_{cell} = 0.00V}\]

(b) \[\ce{2H2O (1) -> O2 (g) + 4H^{+} (aq) + 4e^{-}; E^Θ_{cell} = 1.23V}\]

(c) \[\ce{2SO^{2-}_{4} (aq) -> S2O^{2-}_{8} (aq) + 2e^{-}; E^Θ_{cell} = 1.96V}\]

(i) In dilute sulphuric acid solution, hydrogen will be reduced at cathode.

(ii) In concentrated sulphuric acid solution, water will be oxidised at anode.

(iii) In dilute sulphuric acid solution, water will be oxidised at anode.

(iv) In dilute sulphuric acid solution, \[\ce{SO4^{2-}}\] ion will be oxidised to tetrathionate ion at anode.


Can absolute electrode potential of an electrode be measured?


Consider the following diagram in which an electrochemical cell is coupled to an electrolytic cell. What will be the polarity of electrodes ‘A’ and ‘B’ in the electrolytic cell?


How will the pH of brine (aq. \[\ce{NaCl}\] solution) be affected when it is electrolysed?


Assertion: Mercury cell does not give steady potential.

Reason: In the cell reaction, ions are not involved in solution.


Calculate the standard EMF ofa cell which involves the following cell reactions

\[\ce{Zn + 2 Ag+ -> Zn^{2+} + 2 Ag}\]

Given that \[\ce{E^{o}_{Zn/Zn^{2+}}}\] = 0.76 volt and \[\ce{E^{o}_{Ag/Ag^{+}}}\] = – 0.80 volt.


Which of the following statements about galvanic cell is incorrect


If 0.5 amp current is passed through acidified silver nitrate then in 100 minutes the mass of silver, deposite on cathode is (eq. wt. of silver nitrate + 108).


If the value of Ksp for Hg2Cl2 (s) is X then the value of X will be ____ where pX = - log X.
Given:

\[\ce{Hg2Cl2 + 2e- -> 2Hg(l) + 2Cl-}\],  E° = 0.27 V

\[\ce{Hg+2 + 2e- -> 2Hg(l)}\]   E° = 0.81 V


Which of the following is incorrect?


Explain why the anode is of negative polarity in a galvanic cell.


What are electrochemical reactions?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×