Home
Class 12
CHEMISTRY
When a rod of metal A is dipped in an aq...

When a rod of metal A is dipped in an aqueous solution of metal B (conc. of `B^(2+)` being 1 M) at `25^(@)C`, the standard electrode potentials, are `A^(2+)//A = - 0.76 V` and `B^(2+)// B= 0.34 V`,

A

A will gradually dissolve

B

B will deposit on A

C

No reaction will occur

D

Water will decompose into `H_(2)` and `O_(2)`.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-II)|66 Videos

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-III) (Questions from AIEEE/JEE Examinations)|10 Videos

  • COORDINATION COMPOUNDS

    MODERN PUBLICATION|Exercise Recent Examination Questions|21 Videos

  • ENVIROMENTAL POLLUTION

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIOS|2 Videos

Similar Questions

Explore conceptually related problems

The reaction: Zn^(2+) + 2e^(-) rarr Zn has a standard reduction potential of -0.76 V . This means that

The emf of a galvanic cell constituded with the electrodes Zn^(2+)//Zn (-0.76V) and Fe^(2+)//Fe (-0.41V) is

Find the standard electrode potential of MnO_(4)^(c-)|MnO_(2). The standard electrode potential of MnO_(4)^(c-)|Mn^(2+)=1.51V and MnO_(2)|MnO_(2)|Mn^(2+)=1.23V .

The standard reduction potentials of Cu ^(2+) | Cu and Cu ^(2+) | Cu ^(+) are 0.337 and 0. 153V respectively. The standard electrode potential of Cu ^(+) | Cu half cell is

Calculate the emf of the cell. Zn|Zn^(2+)(0.001M)||Ag^(+)(0.1M)|Ag The standard potential of Ag//Ag^(+) half - cell is +0.80 V and Zn//Zn^(2+) is -0.76V.

The hydrogen electrode is dipped in a solution of pH 3 at 25^@C . The potential of the cell would be (2.303 RT//F = 0.059V) :

The e.m.f. of the cell Zn"|"Zn^(2+)(0.1M)"||"Pb^(2+)(0.1M)"|"Pb is ( standard electrode potentials for Pb^(2+)"|"Pb "and " Zn^(2+)"|"Zn electrode are - 0.126 V and - 0.763 V respectively.)

MODERN PUBLICATION-ELECTROCHEMISTRY-Recent Examination Questions
  1. When a rod of metal A is dipped in an aqueous solution of metal B (con...

    Text Solution

    |

  2. In the electrolysis of acidulated water, it is desired to obtain 1.12 ...

    Text Solution

    |

  3. The one which decreases with dilution is

    Text Solution

    |

  4. The standard electrode potentials E^(@) for the half cell reactions ar...

    Text Solution

    |

  5. 9.65C of electric current is passed through fused anhydrous magnesium ...

    Text Solution

    |

  6. The standard emf of galvanic cell involving 3 moles of electrons in it...

    Text Solution

    |

  7. E(1), E(2) and E(3) are the emf values of the three galvanic cells res...

    Text Solution

    |

  8. The approximate time duration in hours to electroplate 30 g of calcium...

    Text Solution

    |

  9. Which one of the following has a potential more than zero ?

    Text Solution

    |

  10. The emf of a galvanic cell constituted with the electrodes Zn^(2+)"|"Z...

    Text Solution

    |

  11. Conductivity of a saturated solution of a sparingly soluble salt AB at...

    Text Solution

    |

  12. For Cr2O7^(2-) + 14 H^(+) + 6e^(-) to 2Cr^(+3) + 7H2O, E^(@) = 1.33 V ...

    Text Solution

    |

  13. In H2-O2 fuel cell the reaction occurring at cathode is

    Text Solution

    |

  14. How many coulombs of electricity are required for the oxidation of one...

    Text Solution

    |

  15. The standard electrode potential for Daniel cell is 1.1 volt. What is ...

    Text Solution

    |

  16. The cathode reaction in the dry cell will be :

    Text Solution

    |

  17. Lambda(m)^(@) for NH(4)Cl, NaOH and NaCl are 130, 248 and 126.5 "ohm"^...

    Text Solution

    |

  18. Strongest reducing agent among the following is : (i) Na^(+)+e^(-) ...

    Text Solution

    |