Home
Class 11
CHEMISTRY
Thermodynamic efficiency of a cell is gi...

Thermodynamic efficiency of a cell is given by:

A

`-DeltaH//DeltaG`

B

`-nFE//DeltaG`

C

`-nFE//DeltaH`

D

`-nFE^(Theta)`

Text Solution

AI Generated Solution

To find the thermodynamic efficiency of a cell, we can follow these steps: ### Step 1: Understand the Definitions The thermodynamic efficiency of a cell is defined as the ratio of the useful work done (which is represented by Gibbs free energy change, ΔG) to the total heat evolved (which is represented by enthalpy change, ΔH). ### Step 2: Write the Efficiency Formula The formula for thermodynamic efficiency (η) can be expressed as: \[ ...
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercise|1 Videos
  • THERMODYNAMICS

    CENGAGE CHEMISTRY ENGLISH|Exercise Ex 6.1|26 Videos
  • STOICHIOMETRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Subjective|33 Videos

Similar Questions

Explore conceptually related problems

The thermodynamic efficiency of cell is given by

The efficiency of a fuel cell is given by:

A fuel cell is a cell that is continously supplied with an oxidant and a reductant so that if can deliver a current indefinitely. Fuel cells offer the possibility of achieving high thermodynamic efficiency in the conversion of Gibbs energy into mechanical work.Internal combustion engines at best convert only the fraction (T_2-T_1)//T_2 of the heat of combustion into mechanical work. While the thermodynamic efficiency of the fuel cell is given by, eta=(DeltaG)/(DeltaH) , where DeltaG is the Gibbs energy change for the cell reaction and DeltaH is the enthalpy change of the cell reaction.A hydrogen-oxygen fuel cell may have an acidic or alkaline electrolyte. Pt|H_2(g)|H^(+)(aq.)||H_2O(l)|O_(2)(g)|Pt , (2.303 RT)/F=0.06 The above fuel cell is used to produce constant current supply under constant temperature & 30 atm constant total pressure conditions in a cylinder.If 10 moles H_2 and 5 moles of O_2 were taken initially. Rate of consumption of O_2 is 10 milli moles per minute. The half-cell reactions are 1/2O_2(g)+2H^+(aq)+2e^(-)toH_2O(l) E^(@)=1.246 V 2H^+(aq)+2e^(-) to H_2(g) E^(@)=0 To maximize the power per unit mass of an electrochemical cell, the electronic and electrolytic resistances of the cell must be minimized.Since fused salts have lower electolytic resistances than aqueous solutions, high-temperature electrochemical cells are of special interest for practical applications. Calculate e.m.f of the given cell at t=0.(log 2=0.3)

The efficiency of a fuel cell is given by: DeltaG//DeltaS , DeltaG//DeltaH , DeltaS//DeltaG , DeltaH//DeltaG

N moles of a monoatomic gas is carried round the reversible rectangular cycle ABCDA as shown in the diagram. The temperature at A is T_0 The thermodynamic efficiency of the cycle is :

N moles of a monotomic gas is carried round the reversible rectangular cycle ABCDA as shown in the diagram. The temperature at A is T_sigma . The thermodynamic efficiency of the cycle is

Thermodynamics deals with

What is the efficiency of a fuel cell? What is the use of fuel cell ?

The transfer of energy from one trophic level to another is governed by the 2nd law of thermodynamics. The average efficiency of energy transfer from herbivores to carnivores is

The cell constant is given by

CENGAGE CHEMISTRY ENGLISH-THERMODYNAMICS-Archives (Subjective)
  1. Thermodynamic efficiency of a cell is given by:

    Text Solution

    |

  2. The enthalpies for the following reactions (DeltaH^(Theta)) at 25^(@)C...

    Text Solution

    |

  3. The standared enthalpies of formation at 298K for C C1(g), H(2)O(g), C...

    Text Solution

    |

  4. Given that: i. C(s) + O(2)(g) rarr CO(2)(g) , DeltaH =- 94.05 kcal ...

    Text Solution

    |

  5. The following statement is true only under some specific conditions. W...

    Text Solution

    |

  6. The bond dissociation energies of gaseous H(2),Cl(2), and HCl are 100,...

    Text Solution

    |

  7. The standard molar heat of formation of ethane, carbon dioxide and wat...

    Text Solution

    |

  8. An intimate mixture of ferric oxide and aluminium is used as solid fue...

    Text Solution

    |

  9. The enthalpy of combustion of H(2), cyclohexene (C(6)H(10)) and cycloh...

    Text Solution

    |

  10. CsOH +HCI rarr CsCI +H(2)O, DeltaH =- 13.4 kcal mol^(-1)……….(i) CsOH...

    Text Solution

    |

  11. Determine enthalpy change for, C(3)H(8(g))+H(2(g))rarr C(2)H(6(g))+C...

    Text Solution

    |

  12. Compute the heat of formation of liquid methyl alcohol in kilojoule pe...

    Text Solution

    |

  13. From the following data, calculate the enthalpy change for the combust...

    Text Solution

    |

  14. The standard heat of formation values of SF(6)(g), S(g), and F(g) are ...

    Text Solution

    |

  15. Show that the reaction CO(g) +(1//2)O(2)(g) rarr CO(2)(g) at 300K ...

    Text Solution

    |

  16. A sample of argon gas at 1atm pressure and 27^(@)C expands reversibly ...

    Text Solution

    |

  17. Determine the enthalpy of formation of B(2)H(6)(g) in kJ/mol of the fo...

    Text Solution

    |

  18. The standart potential of the following cell is 0.23 at 15^(@)C and 0....

    Text Solution

    |

  19. When 1pentyne (A) is treated with 4N alcoholic KOH at 175^(@)C, it is ...

    Text Solution

    |

  20. Two moles of a perfect gas undergo the following processes: a. A rev...

    Text Solution

    |

  21. C(v) values of He is always (3R)/(2) but C(v) values of H(2) is (3R)/(...

    Text Solution

    |