Home
Class 12
CHEMISTRY
Using the data given below: E(Cr(2)O(7...

Using the data given below:
`E_(Cr_(2)O_(7)^(2-)|Cr^(3+))^(@)=1.33V E_(Cl_(2)|Cl^(-))^(@)=1.36V`
`E_(MnO_(4)^(-)|Mn^(2+))^(@)=1.51V E_(Cr^(3+)|Cr)=-0.74V`
Mark the strongest reducing agent.

A

`Cl^(-)`

B

`Cr`

C

`Cr^(3+)`

D

`Mn^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
C
Strongest reducing agent is one which is oxidized most easiliy, i.e., which has highest oxidation potential. Given values are reduction potentials. Reversing the sign will give oxidation potentials.thus, `Cr//Cr^(3+)` will have highest oxidation potential (+0.74V). hence, Cr is oxidized most easiliy `(CrtoCr^(3+)+3e^(-))` and, therefore, is the strongest reducing agent.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MULTIPLE QUESTIONS-II)|10 Videos

  • ELECTROCHEMISTRY

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MATCHING TYPE QUESTIONS)|3 Videos

  • ELECTROCHEMISTRY

    PRADEEP|Exercise NCERT EXERCISES|16 Videos

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise IMPORTANT QUESTIONS|30 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    PRADEEP|Exercise Curiosity Questions|2 Videos

Similar Questions

Explore conceptually related problems

Using the data given below: E_(Cr_(2)O_(7)^(2-)|Cr^(3+))^(@)=1.33V E_(Cl_(2)|Cl^(-))^(@)=1.36V E_(MnO_(4)^(-)|Mn^(2+))^(@)=1.51V E_(Cr^(3+)|Cr)=-0.74V Mark the strongest oxidising agent.

Using the data given below: E_(Cr_(2)O_(7)^(2-)|Cr^(3+))^(@)=1.33V E_(Cl_(2)|Cl^(-))^(@)=1.36V E_(MnO_(4)^(-)|Mn^(2+))^(@)=1.51V E_(Cr^(3+)|Cr)=-0.74V In which option the order of reducing power is correct?

Using the data given below: E_(Cr_(2)O_(7)^(2-)|Cr^(3+))^(@)=1.33V E_(Cl_(2)|Cl^(-))^(@)=1.36V E_(MnO_(4)^(-)|Mn^(2+))^(@)=1.51V E_(Cr^(3+)|Cr)=-0.74V Find the most stable ion in its reduced forms

Using the data given below: E_(Cr_(2)O_(7)^(2-)|Cr^(3+))^(@)=1.33V E_(Cl_(2)|Cl^(-))^(@)=1.36V E_(MnO_(4)^(-)|Mn^(2+))^(@)=1.51V E_(Cr^(3+)|Cr)=-0.74V Find the most stable oxidised species.

Using tha data given below is reducing potenial. E_(Cr_2O_7^(2-)//Cr^(3+))^@ =1.33 V , E_(Cl_2//Cl^-)^@ =1.36 V E_(MnO_4^(-)//Mn^(2+))^@ =1.51 V , E_(Cr^(3+) // Cr)^@ =- 0.74 V find out which of the following is the strongest oxidising agent.

PRADEEP-ELECTROCHEMISTRY-NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS (MULTIPLE QUESTIONS-I)
  1. An electrochemical cell an behave like an electrolytic cell when

    Text Solution

    |

  2. Which of the statements about solution of electrolytes is not correct?

    Text Solution

    |

  3. Using the data given below: E(Cr(2)O(7)^(2-)|Cr^(3+))^(@)=1.33V E(Cl...

    Text Solution

    |

  4. Find out which of the following is the strongest oxidizing agent.

    Text Solution

    |

  5. Find out in which option the order of reducing power is correct.

    Text Solution

    |

  6. Use the data given in Q.8 and find out the most stable ion in its redu...

    Text Solution

    |

  7. Find out the most stable oxidised species.

    Text Solution

    |

  8. The quantity of charge required to obtain one mole of aluminium from A...

    Text Solution

    |

  9. The cell constant of a conductivity cell

    Text Solution

    |

  10. While charging the lead storage battery:

    Text Solution

    |

  11. wedge^(@)m[NH(4)OH] is equal to

    Text Solution

    |

  12. In the electrolysis of aqueous sodium chloride solution which of the h...

    Text Solution

    |

  13. Can absolute electrode potential of an electrode be measured?

    Text Solution

    |

  14. Can E("cell")^(@) or Delta(r)G^(@) for cell reaction ever be equal to ...

    Text Solution

    |

  15. Under what condition is E("cell")^(@)=0 or Delta(r)G=0?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  20. What is electrode potential?

    Text Solution

    |