Home
Class 12
CHEMISTRY
The standard reduction potentials at 298...

The standard reduction potentials at `298K` for the following half reactions are given against each

Which is the strongest reducting agent?

A

`Zn(s)`

B

`Cr(s)`

C

`H_(2)(s)`

D

`Fe^(2+)(aq)`

Text Solution

Verified by Experts

The correct Answer is:
a
`Zn` is the strongest reducing agent among the given options. The substance having smaller value of reduction potential are better reducing agents.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Archieves Fill In The Blanks|4 Videos

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Archieves True/False|1 Videos

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Archieves Multiple Correct Ansers|2 Videos

  • D AND F BLOCK ELEMENTS

    CENGAGE CHEMISTRY|Exercise Archives Subjective|29 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Archives (Subjective)|14 Videos

Similar Questions

Explore conceptually related problems

The standard reduction potentials at 25^(@)C for the following half reactions are given against each: Zn^(2+) (a.q) + 2e^(-) hArr Zn (s) : " " - 0.762 Cr^(3+) (a.q) 3e^(-) hArr Cr (s) , " " - 0.740 2H^(+) + 2e^(-) hArr H_(2) (g), " " 0.00 Fe^(3+) + e^(-) hArr Fe^(2+) , " " 0.77 Which is the strongest reducing agent?

Standard reduction potential is calculated at

The standard reduction potential at 298 K for single electrodes are given below.l From this we can tell that

Knowledge Check

  • The standard reduction potentials at 298 K for the following half reactions are given against each Zn^(2+) (aq) + 2de hArr Zn(s) - 0.762 Cr^(3+)(aq) + 3e hArr Cr(s) - 0.74 2H^(+)(aq) + 2e hArr H_(2)(g) 0.00 Fe^(3+)(aq) + e hArr Fe^(2+)(aq) 0.77 Which is the stronger reducing agent ?

    A
    `Fe^(2+)(aq)`
    B
    `H_(2)(g)`
    C
    `Cr(s)`
    D
    `Zn(s)`

  • The reduction potential of NCE at 298 K is

    A
    0.3338 V
    B
    0.2415 V
    C
    0.28 V
    D
    0.76 V

  • The standard reduction potentials at 25^(@)C for the following half reactions are given against each: Zn^(2+) (a.q) + 2e^(-) hArr Zn (s) : " " - 0.762 Cr^(3+) (a.q) 3e^(-) hArr Cr (s) , " " - 0.740 2H^(+) + 2e^(-) hArr H_(2) (g), " " 0.00 Fe^(3+) + e^(-) hArr Fe^(2+) , " " 0.77 Which is the strongest reducing agent?

    A
    `Zn`
    B
    `Cr`
    C
    `H_(2)(g)`
    D
    `Fe^(2+) (aq)`
    • CENGAGE CHEMISTRY-ELECTROCHEMISTRY-Archieves Single Correct
    1. The standard reduction potentials at 298K for the following half react...

      Text Solution

      |

    2. Faraday's laws of electrolysis are related to

      Text Solution

      |

    3. A solution containing 1 mol per litre of each Cu(NO(3))(2), AgNO(3), ...

      Text Solution

      |

    4. The electrice charge for eeletrode deposition of 1g equivalent of a s...

      Text Solution

      |

    5. The reaction 1//2Hg(g)+AgCl(s) rarr H^(o+)(aq)+Cl^(c-)(aq)+Ag(s) oc...

      Text Solution

      |

    6. When a lead storage battery is discharged.

      Text Solution

      |

    7. The standard reductino potentials E^(c-) for the half reactinos are as...

      Text Solution

      |

    8. The standard reduction potentials of Cu^(2+)|Cu and Cu^(2+)|Cu^(o+) ar...

      Text Solution

      |

    9. The standard reduction potential values of three metallic cations, X,Y...

      Text Solution

      |

    10. The gasX at 1 atm is bubbled through a solution containing a mixture o...

      Text Solution

      |

    11. For the electrochemical cell, (M|M^(o+))||(X^(c-)|X),E^(c-).((M^(o+)|M...

      Text Solution

      |

    12. Arrange the following compounds in the order of increasing conductanc...

      Text Solution

      |

    13. A standard solution of KNO(3) is used to make salt bridge, because

      Text Solution

      |

    14. Standard electrode potential data are useful for understanding the sui...

      Text Solution

      |

    15. In an electrolytic cell, the flow of electrons is form

      Text Solution

      |

    16. Zn|Zn^(2+)(a=0.1M)||Fe^(2+)(a=0.01M)Fe. The EMF of the above cell i...

      Text Solution

      |

    17. The rusting of iron takes place as follows : 2H^(o+)+2e^(-) +(1)/(2...

      Text Solution

      |

    18. Electrolysis of dilute aqueous NaCl solution was carried out by passin...

      Text Solution

      |

    19. Consider the following cell reation : 2Fe(s)+O(2)(g)+4H^(o+)(aq) rar...

      Text Solution

      |

    20. AgNO(2)(aq) was added to an aqueous KCl solution gradually and the con...

      Text Solution

      |