Home
Class 12
CHEMISTRY
An intimate mixture of ferric oxide and ...

An intimate mixture of ferric oxide and aluminium is used as solid fuel in rockets. Calculate the fuel value per `cm^(3)` of the mixture.
Heats of formation and densities are as follows:
`H_(f(AI_(2)O_(3)))^(Theta)=-399kcal mol^(-1),H_(f(Fe_(2)O_(3)))^(Theta)=-199kcal mol^(-1)`
Density of `Fe_(2)O_(3)=4.0 g cm^(-3)`, Density of `Al = 2.0 g cm^(-3)`

Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    IIT-JEE PREVIOUS YEAR (CHEMISTRY)|Exercise JEE Main And Advanced|17 Videos

Similar Questions

Explore conceptually related problems

An intimate mixture of ferric oxide and aluminium is used as solid fuel in rockets. Calculate the fuel value per cm^(3) of the mixture. Heats of formation and densities are as follows: H_(f(Al_(2)O_(3)))=-399kcal" "mol^(-1),H_(f(Fe_(2)O_(3)))=-199kcal" "mol^(-1) ltbr. Density of Fe_(2)O_(3)=5.2g//cm^(3)," Density of "Al=2.7g//cm^(3)

An intimate mixture of Fe_(2)O_(3) and Ai is used in solid rocket fuel. Calculate the fuel value per gram and per ml of mixture. DeltaH_(Al_(2)O_(3)) = 399.0 kcal, DeltaH_(Fe_(2)O_(3))=199.0 kcal, density of Fe_(2)O_(3) and Al are 5.2 g/ml and 2.7 g/ml respectively.

An intimate mixture of Fe_(2)O_(3) and Al is used in solid fuel rocket. DeltaH of Al_(2)O_(3) and Fe_(2)O_(3) are 399kcal and 199kcal respectively. Calculate the fuel value in kcal g^(-1) of mixture.

In above question7, if the density of Fe_(2)O_(3) and Al are 5.2g//mL and 2.7g//mL respectively. Calculate the fuel value in kcal mL^(-1) of mixture.

Calculate the heat of formation of methane in kcalmol^(-1) using the following thermo chemical reactions C(s)+O_(2)toCO_(2)(g) , DeltaH=-94.2 kcal mol^(-1) H_(2)(g)+1/2O_(2)(g)toH_(2)O(l) , DeltaH=-68.3 kcal mol^(-1) CH_(4)(g)+2O_(2)(g)toCO_(2)(g)+2H_(2)O(l) , DeltaH=-210.8 kcal mol^(-1)

What will be the maximum amount of heat realeased when 321 g of a mixuture of fe_(2)O_(3) and Al is subjected to sparkling in absence of air? DeltaH_(f)(Fe_(2)O_(3)=-199kJ// mole DeltaH_(f)(Al_(2)O_(3)=-399kJ// mole

Calculate Delta_(r)S_(m)^(Theta) for the reaction: 4Fe(s)+3O_(2)(g) rarr 2Fe_(2)O_(3)(s) Given that S_(m)^(Theta)(Fe) = 27.3J K^(-1) mol^(-1) , S_(m)^(Theta)(O_(2)) = 205.0J K^(-1)mol^(-1) and S_(m)^(Theta)(Fe_(2)O_(3)) = 87.4 J K^(-1) mol^(-1) .

AI is costilier than Fe but AI is sacrificed to convert Fe_(2)O_(3) into Fe . Why this change is possible. Name this process : {:(Delta G_(f(Fe_(2)O_(3)))^(@) =-"742.2 kJ/mole"),(Delta G_(f(AI_(2)O_(3)))^(@)=-"1582 kJ/mole"):}

IIT-JEE PREVIOUS YEAR (CHEMISTRY)-THERMODYNAMICS AND THERMOCHEMISTRY-JEE Main And Advanced
  1. The polymerisation of ethylene to linear polyethylene is represented b...

    Text Solution

    |

  2. In order to get maximum calorific output a burner should have an optim...

    Text Solution

    |

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

    Text Solution

    |

  4. Using the data ( all vaues in kcal mol^(-1) at 25^(@)C) given below, c...

    Text Solution

    |

  5. The enthalpy of combustion of H(2) , cyclohexene (C(6)H(10)) and cyclo...

    Text Solution

    |

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

    Text Solution

    |

  7. The standard molar heats of formation of ethane, carbon dioxide, and l...

    Text Solution

    |

  8. The bond dissociation energy of gaseous H(2),Cl(2) and HCl are 104,58 ...

    Text Solution

    |

  9. Given the following standard heats of reactions: (a) heat of formati...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  13. the standed reaction free energy for N(2)O(4)(g) to 2NO(2)is DeltaG...

    Text Solution

    |

  14. we consider a grwing plant. Limting our system to plant itself, to be ...

    Text Solution

    |

  15. One mole of a monationc ideal gas intially at a pressure of 2.00 bar a...

    Text Solution

    |

  16. How much heat flows into the system along path ADB it the work done by...

    Text Solution

    |

  17. When the system is retuned form state B to A along the curved path, th...

    Text Solution

    |

  18. Assertion All reversible reaction proceeds in direction of lower Gibbs...

    Text Solution

    |

  19. Assertion lsothemal expansion of ideal gas againt vacuum must be simul...

    Text Solution

    |

  20. Match the statements of column I with values of column II.

    Text Solution

    |