Home
Class 12
CHEMISTRY
If (1)/(2)X(2)O((s)) rarr X((s))+(1)/(4)...

If `(1)/(2)X_(2)O_((s)) rarr X_((s))+(1)/(4)O_(2(g)),DeltaH=90kJ` then heat change during reaction of metal `X` with `1 mol e O_(2)` to form oxide to maximum extent is `:`

A

`360 kJ`

B

`-360 kJ`

C

`-180 kJ`

D

`+ 180 kJ`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (Section - C) Previous Years Questions|60 Videos

  • THERMODYNAMICS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (Section -D) Assertion-Reason Type Questions|15 Videos

  • THERMODYNAMICS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (Section - A) Objective Type Questions|55 Videos

  • THE SOLID STATE

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - D) (ASSERTION-REASON TYPE QUESTION)|20 Videos

Similar Questions

Explore conceptually related problems

If C(s)+O_(2)(g)to CO_(2)(g),DeltaH=rand CO(g)+1/2O_(2)to CO_(2)(g),DeltaH=s then, the heat of formation of CO is

H_(2)O(s) rarr H_(2)O(l), DeltaH = 6.01 kJ DeltaH is the heat of …………………of ice.

H_(2)O(l) rarr H_(2)O(g), DeltaH = +40.7 kJ DeltaH is the heat of ……………..of water.

H_(2)O(g) rarr H_(2)O(l), DeltaH =- 40.7 kJ DeltaH is the heat of……………….of water.

H_(2)O(l) rarr H_(2)O(s), DeltaH =- 6.01 kJ DeltaH is the heat of ……………….of water.

C_(4)H_(10)+(13)/(2)O_(2)(g)rarr4CO_(2)(g)+5H_(2)O(l), DeltaH =- 2878 kJ DeltaH is the heat of……….of butane gas.

The enthalpy changes for two reactions are given by the equations: 2Cr(s) +(3)/(2)O_(2)(g) rarr Cr_(2)O_(3)(s), DeltaH^(Theta) =- 1130 kJ C(s) +(1)/(2)O_(2)(g)rarr CO(g), DeltaH^(Theta) =- 110 kJ What is the enthalpy change in kJ for the following reactions? 3C(s) +Cr_(2)O_(3)(s) rarr 2Cr(s) +3CO(g)

The thermochemical equation for solid and liquid rocket fuel are given below: 2AI(s) +1(1)/(2)O_(2)(g) rarr AI_(2)O_(3)(s), DeltaH =- 1667.8 kJ H_(2)(g) +(1)/(2)O_(2)(g) rarr H_(2)O(l), DeltaH =- 285.9 kJ a. If equal masses of aluminium and hydrogen are used, which is a better rocket fuel? b. Determine DeltaH for the reaction AI_(2)O_(3)(s) rarr 2AI(s)+1(1)/(2)O_(2)(g)

Fe_(2)O_(2)(s)+(3)/(2)C(s)to(3)/(2)CO_(2)(g)+2Fe(s) DeltaH^(@)=+234.12KJ C(s)+O_(2)(g)toCO_(2)(g) DeltaH^(@)=-393.5KJ Use these equations and DeltaH^(@) value to calculate DeltaH^(@) for this reaction : 4Fe(s)+3O_(2)(g)to2Fe_(2)O_(3)(s)

If 2AI(s) +1(1)/(2) O_(2)(g) rarr AI_(2)O_(3)(s), DeltaH =- 1667.8 kJ H_(2)(g) +(1)/(2)O_(2)(g) rarr H_(2)O(l), DeltaH =- 285.9 kJ Calculate DeltaH for the reaction AI_(2)O_(3)(s) rarr 2AI(s) +1(1)/(2)O_(2)(g)

AAKASH INSTITUTE ENGLISH-THERMODYNAMICS-ASSIGNMENT (Section - B) Objective Type Questions
  1. The temperature of 15 ml of a strong acid increases by 2^(@)C when 15 ...

    Text Solution

    |

  2. The standard heat of formation of NO(2)(g) and N(2)O(4)(g) are 8.0 an...

    Text Solution

    |

  3. If (1)/(2)X(2)O((s)) rarr X((s))+(1)/(4)O(2(g)),DeltaH=90kJ then heat ...

    Text Solution

    |

  4. For a gaseous reaction A(g) + 3 B(g) rightarrow 3C(g) + 3D(g) Delt...

    Text Solution

    |

  5. A mixture of 2 moles of CO and 1 mole of O(2), in a closed vessele is ...

    Text Solution

    |

  6. The bond dissociation energies of X2, Y2 and XY are in the ratio of 1 ...

    Text Solution

    |

  7. Vapour density of a gas is 8. Its molecular mass will be

    Text Solution

    |

  8. If x mole of ideal gas at 27^(@)C expands isothermally and reversibly ...

    Text Solution

    |

  9. Enthalpy of formation of NH(3) is -X kJ and Delta H(H-H), Delta H(N-H)...

    Text Solution

    |

  10. A system X undergoes following changes underset(P(1)V(1)T(1))(X)to u...

    Text Solution

    |

  11. The heat of neutralisation for strong acid and strong base forming 2 m...

    Text Solution

    |

  12. The value of Delta H^(@) in kJ for the reaction will be CS(2)(l) + 4NO...

    Text Solution

    |

  13. The heat librerated on complete combustion of 1 mole of CH(4) gas to C...

    Text Solution

    |

  14. The work done in an open vessel at 300K, when 112g iron reacts with di...

    Text Solution

    |

  15. Which statement is correct?

    Text Solution

    |

  16. A schematic representation of enthalpy changes for the reaction, C("gr...

    Text Solution

    |

  17. Which of the following equations respresents standard heat of formatio...

    Text Solution

    |

  18. Different types of systems are given below The A and B systems re...

    Text Solution

    |

  19. Set of intensive properties is shown by

    Text Solution

    |

  20. For the expansion occuring from initial to final stage in finite time,...

    Text Solution

    |