Home
Class 12
CHEMISTRY
E^(Theta) of Cu is +0.34V while that of ...

`E^(Theta)` of Cu is +0.34V while that of Zn is -0.76 V. Explain.

Text Solution

AI Generated Solution

To explain the standard electrode potentials (E°) of copper (Cu) and zinc (Zn), we need to analyze the processes involved in converting solid copper and zinc into their respective ions in aqueous solution. ### Step-by-Step Explanation: 1. **Understanding Standard Electrode Potential (E°)**: - E° is a measure of the tendency of a chemical species to acquire electrons and thereby be reduced. A positive E° value indicates a greater tendency to be reduced, while a negative value indicates a lesser tendency. 2. **E° of Copper (Cu)**: ...
Promotional Banner

Topper's Solved these Questions

  • D AND F-BLOCK ELEMENTS

    NCERT EXEMPLAR ENGLISH|Exercise Short Answer Type Question|20 Videos

  • COORDINATION COMPOUNDS

    NCERT EXEMPLAR ENGLISH|Exercise Long Answer Type Question|5 Videos

  • ELECTROCHEMISTRY

    NCERT EXEMPLAR ENGLISH|Exercise All Questions|67 Videos

Similar Questions

Explore conceptually related problems

Calculate the emf of the cell. Zn∣ Zn^(2+)(0.001M)∣∣Cu^(2+) (0.1M)∣Cu .The standard potential of Cu/ Cu^(2+) half-cell is +0.34 and Zn/ Zn^(2+) is -0.76 V.

E^(@) values of Mg^(2+)//Mg is -2.37V, of Zn^(2+)//Zn is -0.76V and Fe^(2+)// Fe is - 0.44V Which of the statement is correct ?

Statement-1: Zinc displaces copper from copper sulphate solution. Statement-2: The E_(298)^(@) of Zn is -0.76 volts and that of Cu is +0.34 volts.

The standard oxidation potential of Zn referred to SHE is 0.76V and that of Cu is -0.34V at 25^(@)C . When excess of Zn is added to CuSO_(4),Zn diplaces Cu^(2+) till equilibrium is reached. What is the ratio of Zn^(2+) to Cu^(2+) ions at equilibrium?

E^@ values for the half cell reactions are given below : Cu^(2+) + e^(-) to Cu^(+) , E^@ =0.15 V Cu^(2+) + 2e^(-) to Cu, E^@ =0.34 V What will be the E^@ of the half-cell : Cu^(+) + e^(-) to Cu ?

(a) Calculate Delta G^@ for the reaction Zn (s) + Cu^(2+) (aq) rarr Zn^(2+) + Cu(s) Given: E^@ for (Zn^(2+))//Zn = -0.76 V and E^@ for (Cu^(2+))//Cu = +0.34 V R= 8.314 JK^-1 mol^(-1) F= 96500 Cmol^(-1) (b) give two advantages of fuel cells.

Calculate the maximum work that can be obtained from the daniell call given below, Zn(s)|Zn^(2+)(aq)||Cu^(2+)(aq)|Cu(s) . Given that E_(Zn^(2+)//Zn)^(@)=-0.76V and E_(Cu^(2+)//Cu)^(@)=+0.34V .

For the disproportion of copper: 2 Cu^(+) to Cu^(+2) + Cu E^(0) is :- Given E^(0) for Cu^(+2)//Cu is 0.34 V & E^(0) for Cu^(+2)//Cu^(+) is 0.15 V:

Emf of a cell corresponding to the reaction:- Zn(s) +2H^(+) (aq) rarr Zn^(2+)(aq) [0.1M] +H_(2)(g) [1.0atm] is 0.49V at 25^(@)C, E_(Zn^(2+)//Zn)^(@) = - 0.76 V . The pH of solution in cathode chamber is.

Can a solution of 1 M ZnSO_(4) be stored in a vessel made of copper ? Given that E_(Zn^(+2)//Zn)^(@) =-0.76V and E_(Cu^(+2)//Cu)^(@)=0.34 V

NCERT EXEMPLAR ENGLISH-D AND F-BLOCK ELEMENTS-Short Answer Type Question
  1. Why does copper not replace hydrogen from acids?

    Text Solution

    |

  2. Why E^(-) values for Mn, Ni and Zn are more negative than expected?

    Text Solution

    |

  3. Why first ionisation enthalpy of Cr is lower than that of Zn?

    Text Solution

    |

  4. Transition elements show high melting points. Why?

    Text Solution

    |

  5. When Cu^(2+) ion is treated with KI, a white precipitate is formed. Ex...

    Text Solution

    |

  6. Out of Cu(2)Cl(2) and CuCl(2), which is more stable and why?

    Text Solution

    |

  7. When a brown compound of manganese (A) is treated with HCl it gives a ...

    Text Solution

    |

  8. Although fluorine is more electronegative than oxygen, but the ability...

    Text Solution

    |

  9. Although Cr^(3+) and Co^(2+) ions have same number of unpaired electro...

    Text Solution

    |

  10. Ionisation enthalpies of Ce, Pr and Nd are higher than Th, Pa and U. W...

    Text Solution

    |

  11. Although Zr belongs to 4d and Hf belongs to 5d transition series but i...

    Text Solution

    |

  12. Cerium shows oxidation state of +4 because

    Text Solution

    |

  13. Explain why does colour of KMnO(4) disappear when oxalic acid is added...

    Text Solution

    |

  14. When orange solution containing Cr(2)O(7)^(2-) ion is treated with an ...

    Text Solution

    |

  15. A solution of KMnO(4) on reduction yields either a colourless solution...

    Text Solution

    |

  16. The second and third rows of transition elements resemble each other m...

    Text Solution

    |

  17. E^(Theta) of Cu is +0.34V while that of Zn is -0.76 V. Explain.

    Text Solution

    |

  18. The halides of transition elements become more covalent with increasin...

    Text Solution

    |

  19. While filling up of electrons in the atomic orbitals, the 4s orbital i...

    Text Solution

    |

  20. Reactivity of transition elements decreases almost regularly from Sc t...

    Text Solution

    |