Home
Class 12
CHEMISTRY
Calculate the emf of the cell Cu(s) | Cu...

Calculate the emf of the cell
`Cu(s) | Cu^(2+) (aq) || Ag^(+)(aq) | Ag(s)`
Given,
`E_((Cu^(2+))//(Cu))=+ 0.34 V, E_((Ag^(+))//( Ag)) = 0.80 V`

A

+ 0.46V

B

+1.14V

C

+ 0.57V

D

-0.46V

Text Solution

Verified by Experts

The correct Answer is:
A
Given, `E_((Cu^(2+))//(Cu))=+ 0.34 V` and `E_((Ag^(+))//( Ag)) = 0.80V`
`E_(cell)^@=E_(cathode)^@-E_(anode)^@= E_((Ag^(+))//( Ag))- E_((Cu^(2+))//( Cu))`
`therefore` emf of the cell, `E_(cell)^@=0.80-0.35=+0.46V`
Promotional Banner

Topper's Solved these Questions

  • EAMCET-2019 (TS) SHIFT-1

    SIA PUBLICATION|Exercise CHEMISTRY|30 Videos

  • ENVIRONMENTAL CHEMISTRY

    SIA PUBLICATION|Exercise PROBLEM|16 Videos

Similar Questions

Explore conceptually related problems

The cell reaction of the galvanic cell, Cu(s) // Cu^(2+)(aq) // Hg^(2+) (aq) // Hg (l) is

Calculate the EMF of the cell Cu//Cu^(2+)(0.1M)"//"Cl^(-) (0.01)// 1/2 Cl_(2) , Pt E^(@) Cu^(2+)//Cu = +0.33V E^(@) 1/2 Cl_(2)//Cl^(-) = +1.36V

E.M.F of the cell reaction , 2Ag^(+) + Cu to 2Ag + Cu^(2+) is 0.46 V . If E_(Cu^(2+) // Cu)^(0) is | 0.34 V , E_(Ag^(+)//Ag)^(0) is

Which metal will dissolve if the cell works Cu|Cu^(2+)||Ag^(+)|Ag

E_("red")^(0) (Standard reduction potential ) of different half-cells are given E_(Cu^(+2)//Cu)^(0) = 0.34 V E_(Zn^(+2)//Zn)^(0) = -0.76 V , E_(Ag^(+) // Ag)^(0) = 0.80 V , E_(Mg^(2+) // Mg)^(0) = -2.37 V . In which cell DeltaG^(@) is most negative ?

Write the cell reaction taking plce in the cell CU_((s))|Cu_((aq))^(+2)||Ag _((aq))^(+) |Ag _((s))

Define emf. Calculat the emf of the following galvanic cell : Zn_((s))+Cu_((aq))^(+2)to Zn_((aq))^(+2)+Cu_((s)) E_(zn^(+2//Zn))^(0) =0.76V(anode) ,E_(cu^(+3//Cu))^(0)=+0.34 (Cathode)

The standard reduction potentials for the two half-cell reactions are given below : Cd^(2+) (aq) + 2e^(-) to Cd(s) , E^(0) = -0.40 V " "Ag^(+)(aq) + e^(-) to Ag(s) , E^(0) = 0.80 V The standard free energy change for the reaction 2Ag_((aq))^(+) + Cd_((s)) + Cd_((aq))^(2+) is given by

Consider the systems having liquid-solid interface, (a) copper wire in silver nitrate solution and (b) silver wire in copper sulphate solution. Predict which interface will show spontaneous reaction, if E_(Cu^(2+)//Cu)^(@)=0.34V and E_(Ag^(+)//Ag)^(@)= 0.80V ?

SIA PUBLICATION-ELECTROCHEMISTRY-M.C.Q.
  1. When same quantity of electricity is passed through aqueous AgNO(3) an...

    Text Solution

    |

  2. When electric current is passed through acidified water for 1930s, 112...

    Text Solution

    |

  3. Calculate the emf of the cell Cu(s) | Cu^(2+) (aq) || Ag^(+)(aq) | Ag(...

    Text Solution

    |

  4. The standard reduction potentials of Zn^(2+)//Zn,Cu^(2+)//Cu and Ag^(+...

    Text Solution

    |

  5. What is the time (in sec) required for depositing all the silver prese...

    Text Solution

    |

  6. Assertion (A) : A current of 96.5 A is passed into aqueous AgNO(3) sol...

    Text Solution

    |

  7. Which of the following is not correct?

    Text Solution

    |

  8. The electrochemical equivalent of a metal is ‘x’ g-C^(-1),The equival...

    Text Solution

    |

  9. When X amperes of current is passed through molten for 96.5s, 0.09 g o...

    Text Solution

    |

  10. What is the reduction electrode potential (in volts) of copper electro...

    Text Solution

    |

  11. 0.066 g of metal was deposited, when a current of 2 A is passed throug...

    Text Solution

    |

  12. During the electrolytic reduction of alumina, the reaction at cathode ...

    Text Solution

    |

  13. One ampere of current is passed for 9650s through molten AlCl(3). What...

    Text Solution

    |

  14. Molten CuCl(2) is electrolysed using platinum electrodes. The reaction...

    Text Solution

    |

  15. What is the approximate quantity of electricity (in coulomb) required ...

    Text Solution

    |

  16. The units of electrochemical equilvalent are

    Text Solution

    |

  17. The cell reaction of a cell is Mg(s) + Cu^(2+)(aq) to Cu(s) + Mg^(2+)(...

    Text Solution

    |

  18. Which one of the following metals will not reduce H(2)O?

    Text Solution

    |

  19. In the electrochemical cell H(2)(g) 1atm | 1H^(+)(lm) || Cu^(2+) (IM)...

    Text Solution

    |

  20. On passing a current through a KCl solution, 19.5g of potassium is dep...

    Text Solution

    |