Home
Class 12
CHEMISTRY
Calculate the emf of the following cell ...

Calculate the emf of the following cell at `298K`:
`Fe(s) abs(Fe^(2+)(0.001M))abs(H^+(1M))H_2(g)``(1"bar"),Pt(s)` (`"Give` `E_("Cell")^@`=`+0.44V`)

Text Solution

AI Generated Solution

To calculate the emf of the given cell at 298 K, we will follow these steps: ### Step 1: Identify the half-reactions The cell representation indicates that iron (Fe) is being oxidized and hydrogen ions (H⁺) are being reduced. The half-reactions are: - Oxidation half-reaction: \[ \text{Fe}(s) \rightarrow \text{Fe}^{2+} + 2e^- \] ...
Promotional Banner

Topper's Solved these Questions

  • XII BOARDS

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise Set -II|11 Videos
  • XII BOARDS

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise Set -III|11 Videos
  • XII BOARDS

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise DELHI BOARD SET II|8 Videos
  • SAMPLE PAPER 2019

    XII BOARD PREVIOUS YEAR PAPER ENGLISH|Exercise SECTION: D|1 Videos

Similar Questions

Explore conceptually related problems

Write the cell reaction and calculate the e.m.f. of the following cell at 298 K : Sn(s) |Sn^(2+) (0.004M)||H^(+) (0.020M) |H_(2)(g) (1 bar )| Pt(s) (Given E_(Sn^(2+)//Sn)^(@) = -0.14V ).

Calculate the e.m.f. of the following cell at 298K : Pt(s)|Br_(2)(l)|Br^(-)(0.010M)||H^(+)(0.030M)|H_(2)(g)(1"bar")|Pt(s) Given : E_((1)/(2)Br_(2)//Br^(-))^(@)=+1.08V .

(a) The e.m.f. of the following cell at 298 K is 0.1745 V Fe(s) //Fe^(2+) (0.1 M) ////H^(+)(x M)//H_(2)(g) ("1 bar")//Pt (s) Given : E_(Fe^(2+)//Fe)^(0) = - 0.44 V Calculate the H^(+) ions concentration of the solution at the electrode where hydrogen is being produced. (b) Aqueous solution of copper sulphate and silver nitrate are electrolysed by 1 ampere current for 10 minutes in separate electrolytic cells. Will the mass of copper and silver deposited on the cathode be same or different? Explain your answer.

Write the Nernst equation and compute the e.m.f. of the following cell at 298K: Sn(s)"|"Sn^(2+)(0.05M)"||"H^(+)(0.02M)"|"H_(2) , 1 atm Pt [Given : E^(Theta)Sn^(2+)//Sn=-0.136V ]

Calculate E_(cell)^(@) for the following reaction at 298 K: 2AI(s) + 3Cu^(2+)(0.01M) to 2A1^(3+)(0.01M) + 3Cu(s) "Given" : E_(cell) = 1.98V (b) Using the E^(@) values A and B, predict which is better for coating the surface of iron [E^(@)(Fe^(2+)//Fe) = -0.44V] to prevent corrosion and why? "Given" : E^(@)(A^(2+)//A) = 2.37V : E^(@)(B^(2+) //B) = 0.14V

Calculate the emf of the following cell reaction at 298 K: Mg(s) +Cu^(2+) (0.0001 M) to Mg^(2+) (0.001M) +Cu(s) The standard potential (E^(Theta)) of the cell is 2.71 V.

Calculate the cell potential of following cell Pt(s)|H_(2)(g)"(0.1 bar)"|BOH(0.1M)||HA(0.1M)|H_(2)(g)("1 bar")|Pt Given K_(a)(HA)=10^(-7), K_(b)(BOH)=10^(-5)

Calculate the e.m.f. and DeltaG for the cell reaction at 298 K: Mg_((s))"/"Mg_((0.1M))^(2+)"//"Cu_((0.01M))^(2+)"/"Cu_((s)) Given E_("cell")^(@) = -2.71V 1F=96,500C

Calculate the emf of the cell Fe(s)+2H^(+)(1M)toFe^(+2)(0.001M)+H_(2)//(g),1 atm) (Given : E_(Fe^(+2)//Fe)=-0.44V)

Calculate the EMF of the cell Fe(s)+2H^(+)(1M)rarrFe^(+2)(0.001 M)+H_(2)(g)(1 "atm")("given" : E_(Fe^(2+)//Fe)^(@)=-0.44 V)

XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII BOARDS-Set -I
  1. (a) Which metal in the first transition series (3d series) exhibits +...

    Text Solution

    |

  2. Chlorobenzene is extremely less reactive towards nucleophilic substitu...

    Text Solution

    |

  3. Explain the mechanism of the reaction is given below : 2CH3-CH2-OHund...

    Text Solution

    |

  4. How will you convert (i) Propene to Propan-2-ol? (ii) Phenol to 2...

    Text Solution

    |

  5. (a) What type of semiconductor is obtained when silicon is doped with...

    Text Solution

    |

  6. Determine the osmotic pressure of a solution prepared by dissolving 2....

    Text Solution

    |

  7. Calculate the emf of the following cell at 298K: Fe(s) abs(Fe^(2+)(0...

    Text Solution

    |

  8. How would you account for the following? (l) Transition metals exhib...

    Text Solution

    |

  9. Complete the following chemical equations : (i) Cr2O6^(2-)+6Fe^(2+)...

    Text Solution

    |

  10. Specify the oxidation number of the metals in the following coordinati...

    Text Solution

    |

  11. Given the stuctures of A,B and C in the following reactions- (i) C6...

    Text Solution

    |

  12. Write the names and structures of the monomers of the following polyme...

    Text Solution

    |

  13. After watching a programme on TV about the adverse effects of junk foo...

    Text Solution

    |

  14. (a) Which one of the folJowing is a food preservative? Equanil, Mor...

    Text Solution

    |

  15. A reaction is second order in A and first order in B . (i) Write the ...

    Text Solution

    |

  16. For a first order reaction, show that time required for 99% completio...

    Text Solution

    |

  17. (a) Given reasons for the following : (i) Bond enthalpy of F2 is low...

    Text Solution

    |

  18. Account for the following : (i) Helium is used in diving apparatus. ...

    Text Solution

    |

  19. How will you bring about the following conversions? (1) Propanone t...

    Text Solution

    |

  20. Complete the following reactions : (b) Give simple chemical tests t...

    Text Solution

    |