Home
Class 12
CHEMISTRY
What is Ellingham diagram?...

What is Ellingham diagram?

Text Solution

Verified by Experts

The graphical representation of gibbs energy against temperature is called Ellingharit diagiam. The diagram helps in predicting the feasibility of thermal reduction of an ore. It helps ini selecting the .reducing agent in the reduction of ores. The criterion of feasibility is that at a given temperature, gibbs energy of the reaction must be negative.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    V PUBLICATION|Exercise QUESTION BANK|154 Videos

  • HALOALKANES AND HALOARENES

    V PUBLICATION|Exercise QUESTION BANK|144 Videos

Similar Questions

Explore conceptually related problems

Which of the following statements about Ellingham diagram are true? i) Ellingham diagram normally consists of plots of Delta_(f)G^(@) Vs T for formation of oxides of elements (ii) Each plot will be straight lines at all temperatures iii) There is a point in a curve below which DeltaG is -ve and above this point the oxide decompose its own iv) Ellingham diagram is restricted to metal oxides v) Ellingham diagram does not say about kinetics of the reduction process vi) Ellingham diagram presumes that the reactants and products are in equilibrium

Which of the following is incorrect on the basis of the given Ellingham diagram for carbon?

Delta G^circ' Vs. T plot in the Ellingham's diagram slopes downward for the reaction : Mg+2 O_2 rarr MgO , 2 Ag+1 / 2 O_2 rarr Ag_2 O , C+1 / 2 O_2 rarr CO , CO+1 / 2 O_2 rarr CO_2

What is a phasor diagram?

The Ellingham diagram for a number of metallic sulphides is shown below. Formation of which of the sulphides is most spontaneous?

V PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-QUESTION BANK
  1. Which of the following ores can be concentrated by magnetic separation...

    Text Solution

    |

  2. Why is the reduction of a' metal'oxide easier if the metal formed is i...

    Text Solution

    |

  3. What is Ellingham diagram?

    Text Solution

    |

  4. Name the constituents of the following-alloys? (i) Bronze,ii)stainless...

    Text Solution

    |

  5. Name the electrolytic process used for the extraction of aluminium? Wh...

    Text Solution

    |

  6. Give the different steps involved in metallurgy

    Text Solution

    |

  7. Prudict the mode of occurrence of the following metals. (i) Highly rea...

    Text Solution

    |

  8. Giving appropriate examples (at least three) explain how the reactivit...

    Text Solution

    |

  9. Explain the terms-(1) Quenching (2) Annealing (3) Tempering

    Text Solution

    |

  10. Name three metals.which occur in nature miainly as oxide ores. Name on...

    Text Solution

    |

  11. What chemical principle is involved in choosing a reducing agent for g...

    Text Solution

    |

  12. Describe the principle of extraction of each of the following (b) Zn ...

    Text Solution

    |

  13. Discuss some of the factors, which need consideration before deciding ...

    Text Solution

    |

  14. Which of the folllowing benefaction processes is used for the mineral ...

    Text Solution

    |

  15. The impurities associated with the ore after mining are collectively c...

    Text Solution

    |

  16. In which of the folllowing minerals, aluminium is not present?

    Text Solution

    |

  17. The process in which metal oxide is reduced to metal by Al is called

    Text Solution

    |

  18. During smelting, the additional substance added, which combines with i...

    Text Solution

    |

  19. An ore after levigation is found to have acidic impurities. Which of t...

    Text Solution

    |

  20. Which of the following metals is. ieached by cyanide process

    Text Solution

    |