Home
Class 12
CHEMISTRY
Consider the following cell reaction 2...

Consider the following cell reaction
`2Fe_((s))+O_(2(g))+4H_((aq.))^(o+)rarr2Fe_((aq.))^(+2)+2H_(2)O_((l))" "E^(@)=1.67V`
At `[Fe^(+2)]=10^(-3)M, P(O_(2))=0.1" atm and pH = 3, the cell potential at "25^(@)C` is …….
Use `(2.303RT)/(F)=0.059`

A

`1.47V`

B

`1.73V`

C

`1.87V`

D

`1.57V`

Text Solution

Verified by Experts

The correct Answer is:
D
`Q_(c)= ([Fe^(+2)]^2)/([H^(+)]^(4) Po_(2))= ([10^(-3)]^2)/(10^(-4)0.1) = (10^(-6))/(10^(-5) = 10^(-1)`
`logQ_(c)= -1`
`E=E_("RXN")^(@)-(0.0591)/(4) (logQ_(c))= 1.67-(0.0591)/(4)=([-1.0])= 1.67+ (0.0591)/(4) = =1.685V`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    VMC MODULES ENGLISH|Exercise Level-2|65 Videos

  • ELECTROCHEMISTRY

    VMC MODULES ENGLISH|Exercise JEE Main (Archive)|57 Videos

  • ELECTROCHEMISTRY

    VMC MODULES ENGLISH|Exercise Level-0 (Long Answer Type ) (5 Marks)|1 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    VMC MODULES ENGLISH|Exercise JEE ADVANCE (ARCHIVE)|30 Videos

  • ENVIRONMENTAL CHEMISTRY

    VMC MODULES ENGLISH|Exercise JEE Main (Archive)|39 Videos

Similar Questions

Explore conceptually related problems

Consider the following cell reation : 2Fe(s)+O_(2)(g)+4H^(o+)(aq) rarr 2Fe^(2+)(aq)+2H_(2)O(l)" "E^(c-)=1.67V At[Fe^(2+)]=10^(-3)M,p(O_(2))=0.1atm and pH=3 . The cell potential at 25^(@)C is (a) 1.47V (b) 1.77V (c) 1.87V (d) 1.57V

Consider the following cell reaction. 2Fe(s)+O_(2)(g)+4H^(+)(aq)rarr2Fe^(2+)(aq)+2H_(2)O(l), E^(@)=1.67V At [Fe^(2+)]=10^(-3)M,P(O_(2))=0.1 atm and pH=3, the cell potential at 25^(@)C is

Consider the following cell reaction 2Fe(s)+O_(2)(g)+4H^(+)(aq) rarr 2Fe^(2+)(aq)+2H_(2)O(l) If E_("cell")=E_("cell")^(@) at 25^(@)C and [Fe^(2+)]=10^(-3)M,P_(O_(2))=0.01 atm and pH=x value of x is

Balanced the following equations: H_(2)O_(2)+H^(o+)+Fe^(2+)rarr H_(2)O+Fe^(3+)

The equivalent weight of FeS_(2) in the following reaction is FeS_(2)+O_(2) rarr Fe^(+3)+SO_(2)

Complete the following chemical equations : (i) MnO_(4)^(-) (aq) + S_(2)O_(3)^(2-) (aq) + H_(2) O(l) to1 (ii) Cr_(2)O_(7)^(2-) (aq) + Fe^(2+)(aq) + H^(+) (aq) to

Balance the following redox reactions by ion-electron method. H_(2)O_(2)(aq)+Fe^(2+)(aq)toFe^(3+)(aq)+H_(2)O(l) (in acidic solution)

Delta_rG^@ for the cell with the cell reaction : Zn_((s))+ Ag_2O_((s)) + H_2O_((l)) to Zn_((aq))^(2+) + 2Ag_((s)) + 2OH_((aq))^(-) [E_(Ag_2O // Ag)^(@)=0.344 V, E_(Zn^(2+)//Zn)^@=-0.76 V]

Which of the following statements is correct about the reaction given below:- 4Fe(s)+3O_(2)(g)rarr2Fe_(2)O_(3)(g)

Which of the following statements is correct about the reaction given below:- 4Fe(s)+3O_(2)(g)rarr2Fe_(2)O_(3)(g)

VMC MODULES ENGLISH-ELECTROCHEMISTRY-Level-1
  1. If R(1) and R(2) are the resistance of two solution of equal volume, ...

    Text Solution

    |

  2. When a quantity of electricity is passed through CuSO(4) solution, 0.1...

    Text Solution

    |

  3. Consider the following cell reaction 2Fe((s))+O(2(g))+4H((aq.))^(o+)...

    Text Solution

    |

  4. The reduction potentail of hydrogen half -cell will be negative if :

    Text Solution

    |

  5. The standard emf of a galvanic cell involving 2 motes of electrons ...

    Text Solution

    |

  6. At 25^(@)C temperature the cell potential of a given electrochemica...

    Text Solution

    |

  7. E(M^(3+)//(M))^(@) = -0.036V , E(M^(2+)//M)^(@)= -0.439V. The value of...

    Text Solution

    |

  8. Small quantities of compounds TX, TY and TZ are put into separate test...

    Text Solution

    |

  9. The potential of the cell for the reaction, M(s)+2H^(+) (1M)rightarrow...

    Text Solution

    |

  10. The cell , Zn | Zn^(2+) (1M) || Cu^(2+) (1M) Cu (E("cell")^@ = 1. 10 V...

    Text Solution

    |

  11. An alloy of Pb-Ag weighing 1.08g was dissolved in dilute HNO(3) and th...

    Text Solution

    |

  12. Ba(NO(3))2 (aq) was added to an aqueous K(2)SO(4) soltuion gradually a...

    Text Solution

    |

  13. 9.65 C of electric current is passed through fused anhydrous MgCl(2) ....

    Text Solution

    |

  14. What will be PH of aqueous solution of electrolyte in electrolytic cel...

    Text Solution

    |

  15. During the electrolysis of molten NaCl solution, 230 g of sodium metal...

    Text Solution

    |

  16. Give the products available on the cathode and the anode respectively ...

    Text Solution

    |

  17. The standard redox potentials for the reactions, MN^(2+) + 2e^(-)to M...

    Text Solution

    |

  18. Which of the following reaction is correct for a given electrochemical...

    Text Solution

    |

  19. What will be the reduction potential of a hydrogen electrode which is ...

    Text Solution

    |

  20. (i) Cu+ 2HCl(2) +H(2)(g) [E(Cu(2+)//Cu^(@) = ).34V] (ii)Zn + 2HClri...

    Text Solution

    |