Home
Class 12
CHEMISTRY
DeltaG(f)^(@)values for the formation of...

`DeltaG_(f)^(@)`values for the formation of `CuO, CO and H_(2)O` are respectively `-129.7, -137.2 and -237.2 kJ mol^(-1)` respectively. In between carbon and hydrogen, which is good reductant for reduction of the metal oxide. Why?

Promotional Banner

Topper's Solved these Questions

  • METALLURGY

    AAKASH SERIES|Exercise EXERCISE - 7.1.4|5 Videos

  • IONIC EQUILLIBRIUM

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICE SHEET ( ADVANCED))|11 Videos

  • NITROGEN CONTAINING COMPOUNDS

    AAKASH SERIES|Exercise Conversions|18 Videos

Similar Questions

Explore conceptually related problems

The standard enthalpies of formation of CO_(2) gas and HCOOH_((l)) are -393.7 kJ mol^(-1) and -409.2 kJ mol^(-1) respectively. Which of the following are correct?

The heats of formation of CO_(2(g)) , H_2O_((l)) and CH_(4(g)) are respectively –394 kJ mol^(-1), -286 kJ mol^(-1) and -76 kJ mol^(-1) . Calculate the heat of combustion of methane.

The enthalpy of combustion of cyclohexane cyclohexene and H_2 are respectively -3920, -3800 and -241 KJ mol^(-1) . The heat of hydrogenation of cyclohexene in KJ mol^(-1) is

Oxidation states of P in H_4P_2O_5, H_4P_2O_6 and H_4P_2O_7 are respectively :

Enthalpies of formation of CO(g), CO_(2)(g),N_(2)O(g) and N_(2)O_(4)(g) are -110, -393.81 and 9.7 kJ mol^(-1) respectively. Find the value of D_(r)H for the reaction: N_(2)O_(4)(g)+3CO(g)toN_(2)O(g)+3CO_(2)(g)

AAKASH SERIES-METALLURGY-EXERCISE - 7.2
  1. What criterion is followed for the selection of the stationary phase i...

    Text Solution

    |

  2. Which metals are extracted by auto-reduction process?

    Text Solution

    |

  3. Why copper pyrites roasted partially during the extraction of copper?

    Text Solution

    |

  4. Ag and Cu are below hydrogen in activity series, yet they are found in...

    Text Solution

    |

  5. CO is more effective reducing agent than coke below 983 K, but above 9...

    Text Solution

    |

  6. How the following metals are refined: (a) Copper with cuprous oxide ...

    Text Solution

    |

  7. When heamatite is burnt in air with coke and lime at 2000^(@)C, steel ...

    Text Solution

    |

  8. Why is the extraction of copper form pyries more difficult then that f...

    Text Solution

    |

  9. How is leaching carried out in the case of low grade copper ores?

    Text Solution

    |

  10. Hydrogen is a common reductant of organic chemicals, but it is not ...

    Text Solution

    |

  11. Copper can be extracted by hydrometallurgy but not Zinc -explain.

    Text Solution

    |

  12. Alkali metals are

    Text Solution

    |

  13. Is it true that under certain conditions, Mg can reduce SiO2 and Si c...

    Text Solution

    |

  14. Name the metal M, which is extracted based on the following equation ...

    Text Solution

    |

  15. In the extraction of Fe, what is the advantage of difference in temper...

    Text Solution

    |

  16. Metal oxide is easily reduced if the metal is in molten state at the t...

    Text Solution

    |

  17. What are the compositions of gem stones, ruby and sapphire?

    Text Solution

    |

  18. Active metals are not extracted by the electrolysis or aqueous electro...

    Text Solution

    |

  19. DeltaG(f)^(@)values for the formation of CuO, CO and H(2)O are respect...

    Text Solution

    |

  20. Anhydrous aluminium chloride fumes in air. Give reasons.

    Text Solution

    |