Home
Class 12
CHEMISTRY
DeltaG^(@) vsT plot in the Ellingham dia...

`DeltaG^(@) vsT` plot in the Ellingham diagram slopes down for the reaction.

A

`Mg + (1)/(2) O_(2) rarr MgO`

B

`2Ag + (1)/(2) O_(2) rarr Ag_(2) O`

C

`C + (1)/(2) O_(2) rarr CO`

D

`CO + (1)/(2) O_(2) rarr CO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercise (Assertion-Reasoning)|18 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercise (Integer)|27 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercise (Multiple Correct)|43 Videos

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Archieves Subjective|35 Videos

  • GRIGNARD REAGENTS AND ORGANOMETALLIC REAGENTS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises Archives (Linked Comprehension)|1 Videos

Similar Questions

Explore conceptually related problems

DeltaG^(Ө) vs T plot in Ellingham diagram slopes downward for the reaction .

What is Ellingham diagram?

Ellingham diagram represents:

Ellingham diagram is used for ?

An Ellingham diagram provides information about :

For a sponaneous reaction, the free energy change must be negative, Delta G=Delta H-T Delta S, Delta H is the enthalpy change during the reaction. T is the absolute temperature, and Delta S is the change in entropy during the reaction. Consider a reaction such as the formation of an oxide M+O_(2) to MO Dioxygen is used up in the course of this reaction. Gases have a more random structure (less ordered) than liquid or solids. Consequently gases have a higher entropy than liquids and solids. In this reaction S (entropy or randomness) decreases, hence Delta S is negative. Thus, if the temperature is raised then T Delta S becomes more negative,Since, TDelta S is substracted in the equation, then Delta G becomes less negative. Thus, the free energy change increases with the increase in temperature. The free energy changes that occur when one mole of common reactant (in this case dioxygen) is used may be plotted graphically aginst temperature for a number of reactions of metals to their oxides. The following plot is called an Ellingham diagram for metal oxide. Understanding of Ellingham diagram is extremely important for the efficient extraction of metals. As per the Ellingham diagram of oxides which of the following conclusion is true ?

With respect to an ore, Ellingham diagram helps to predict the feasiblity of its

Select the correct statements (Ellingham diagram) :

CENGAGE CHEMISTRY ENGLISH-GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS-Exercise (Single Correcttype)
  1. Gold is extracted by hydrometallurgical procees based on its property

    Text Solution

    |

  2. van Arkel method of purification of metals involves converting the met...

    Text Solution

    |

  3. DeltaG^(@) vsT plot in the Ellingham diagram slopes down for the react...

    Text Solution

    |

  4. Self-reduction of Cu(2)S to Cu can be carried out in.

    Text Solution

    |

  5. Ag(2)S +NaCN rarr (a) (a) +Zn rarr (d) (b) is a metal. Hence (a) a...

    Text Solution

    |

  6. During smelting, an additional is added which combines with impurites ...

    Text Solution

    |

  7. The process of isolation of metals by dissolving the ore in a suitable...

    Text Solution

    |

  8. Complexes formed in the following methods are : (1) Mond’s process ...

    Text Solution

    |

  9. Casseterite ore consists of magnetic impurity named as

    Text Solution

    |

  10. Find the formula of A ZnS + O(2) rarr (A) + SO(2).

    Text Solution

    |

  11. Four metals and their methods of refinement are given (i) Ni, Cu, Z...

    Text Solution

    |

  12. Which of the following statement is correct regarding Cu extraction ?

    Text Solution

    |

  13. Which of the following process is not involved in the extraction of Fe...

    Text Solution

    |

  14. Carbon reduction process is not commercially applicable for which of t...

    Text Solution

    |

  15. Which of the following metal can be reduced by carbon reduction as wel...

    Text Solution

    |

  16. Which of the following factors is of no significance for roasting sul...

    Text Solution

    |

  17. The method not used in metallurgy to refine impure metal is :

    Text Solution

    |

  18. The elements of group 16 are called as chalcogens. Give reason.

    Text Solution

    |

  19. The oxidation states of Cu and Fe in chalcopyrite are, respectively,

    Text Solution

    |

  20. Thermite reduction is not used for commercial extraction of the respec...

    Text Solution

    |