Home
Class 12
CHEMISTRY
Value of standard electrode potential fo...

Value of standard electrode potential for the oxidation of `Cl^(-)` ions is more positive than that of water, even then in the electrolysis of aqueous sodium chloride, why is `Cl^(-)` oxidised at anode instead of water ?

Text Solution

Verified by Experts

During the electrolysis of aqueous sodium chloride, oxidation of water at anode requires overpotential. Hence, `Cl^(-)` is oxidised instead of water
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS (Matching Type)|6 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS (Assertion-Reason Type)|10 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS (Multiple Choice Question)(More Than One Correct Type)|10 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 8 (Answer the following questions)|10 Videos

  • ENVIRONMENTAL CHEMISTRY

    CHHAYA PUBLICATION|Exercise PRACTICE SET 14(Answer the following questions)|6 Videos

Similar Questions

Explore conceptually related problems

Sodium chloride is less soluble in heavy water than ordinary water-why?

Give reason : On the basis of E^(@) values, O_(2) gas should be liberated at anode. But it is Cl_(2) gas which is liberated in the electrolysis of aqueous NaCl.

Although the abundance of Na and K in the earth's| crust are comparable, sodium is nearly 30 times more abundant than potassium in sea water-why?

If Na^+ ion is larger than Mg^(2+) and S^(2-) ion is larger than Cl^- , which of the following will be least soluble in water ?

This question has statement I and Statement II . Of the four choices given after the statements, choose the one that best describes the two Statements. Statement-I: CH_3CH_2OCH_2Cl reacts faster when treated with water than CH_3CH_2OCH_2CH_2Cl Statement-II:Carbonium Ion formed by the ionization of CH_3CH_2OCH_2Cl is stabilized by resonance.

Following reactions occur at cathode during the electrolysis of aqueous silver chloride solution : Ag^(+)(aq)+e rarr Ag(s)E^(@)=+0.80V H^(+)(aq)+erarr(1)/(2)H_(2)(g)E^(@)=+0.00V Onn the basis of their standard reduction electrode potential (E^(@)) values, which reaction is feasible at the cathode and why?

The reaction at the anode and the cathode during the electrolysis of a concentrated aqueous solution of NaCl in presence of inert electrodes are : "Anode: "2Cl^(-)(aq)rarr Cl_(2)(g)+2e , E_("Red")^(@)=+1.36V "Cathode : "2H_(2)O(l)+2e rarr H_(2)(g)+2OH^(-)(aq)' E_("Red")^(@)=-0.83V. Cell reaction : 2Cl^(-)(aq)+2H_(2)O(l)rarr H_(2)+Cl_(2)+2OH^(-)(aq) . Which of the following statement is correct -

The volume of oxygen liberated at 26^(@)C and 714 mm pressure due to thermal decomposition of x g of KClO_(3) and collected over water is 760 mL. what is the value of x? [Given that aqueous tenstion at 26^(@)C=26mm,K=39,Cl=35.5,O16]

Thermal decomposition of x g of KClO_(3) produces 760 mL O_(2) , which is collected over water at 27^(@)C and 714 mm Hg pressure. Find the value of x. [Given tht at 27^(@)C , aqueous tension=26 mm Hg and atomic weights of K=39, Cl=35.5, O=16]

CHHAYA PUBLICATION-ELECTROCHEMISTRY-SOLVED NCERT EXEMPLAR PROBLEMS (Short Answer Type)
  1. Under what condition is E("cell")=0 or Delta(r)G=0?

    Text Solution

    |

  2. What does the negative sign in the expression E(Zn^(2+)|Zn)^(@)=-0.76V...

    Text Solution

    |

  3. Aqueous copper sulphate solution and aqueous silver nitrate solution a...

    Text Solution

    |

  4. Depict the galvanic cell in which the cell reaction is Cu+2Ag^(+)rarr ...

    Text Solution

    |

  5. Value of standard electrode potential for the oxidation of Cl^(-) ions...

    Text Solution

    |

  6. What is electrode potential ?

    Text Solution

    |

  7. Consider the following diagram in which an electrochemical cell is cou...

    Text Solution

    |

  8. Why is alternating current used for measuring resistance of an electro...

    Text Solution

    |

  9. A galvanic cell has electrical potential of 1.1 V. If an opposing pote...

    Text Solution

    |

  10. How will the pH of brine (aq. NaCl solution) be affected when it is el...

    Text Solution

    |

  11. Unlike dry cell, the mercury cell has a constant cell potential throug...

    Text Solution

    |

  12. Solutions of two electrolytes 'A' and 'B' are diluted. The Lambda(m) o...

    Text Solution

    |

  13. When acidulated water (dil. H(2) SO(4) solution) is electrolysed, will...

    Text Solution

    |

  14. In an aqueous solution how does specific conductivity of electrolytes ...

    Text Solution

    |

  15. Which reference electrode is used to measure the electrode potential o...

    Text Solution

    |

  16. Consider the following galvanic cell given below- Cu|Cu^(2+)||Cl^(-...

    Text Solution

    |

  17. Write the Nernst equation for the cell reaction in the Daniel cell. Ho...

    Text Solution

    |

  18. What advantage do the fuel cells have over primary and secondary batte...

    Text Solution

    |

  19. Write the cell reaction of a lead storage battery when it is discharge...

    Text Solution

    |

  20. Why on dilution Lambda(m) of CH(3)COOH increases drasti- cally, but t...

    Text Solution

    |