Home
Class 12
CHEMISTRY
The enthalpy change of which reaction ...

The enthalpy change of which reaction corresponds to `DeltaH_(f)^(@) "for"Na_(2)CO_(3)(s)298K?`

A

` 2 Na(s)+C(s)+(3)/(2)O_(2)(g)toNa_(2)O_(3)(s)`

B

`Na_(2)O(s)+CO_(2)(g)toNa_(2)CO_(3)(s)`

C

`2Na^(+)(aq.)+CO_(3)^(2-)(aq.)toNa_(2)CO_(3)(s)`

D

`2Na^(+)(aq.)+2OH^(-)(aq.)+CO_(2)(aq.)toNa_(2)CO_(3)(s)+H_(2)O`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • Chemical Thermodynamics and Thermochemistry

    OP TANDON|Exercise Objective Question Level B Set II|8 Videos

  • Chemical Thermodynamics and Thermochemistry

    OP TANDON|Exercise Assertion Reason Type Question|29 Videos

  • Chemical Thermodynamics and Thermochemistry

    OP TANDON|Exercise Set 2|18 Videos

  • CHEMICAL KINETICS

    OP TANDON|Exercise LINKED COMPRESHENSION TYPE QUESTIONS ( SECTION-VI)|4 Videos

  • CLASSIFICATION AND NOMENCLATURE OF ORGANIC COMPOUNDS

    OP TANDON|Exercise INTEGER|2 Videos

Similar Questions

Explore conceptually related problems

For which reaction is DeltaH_(rxn)^(@) equal to DeltaH_(f)^(@) for CUSO_(4)(s)?

The enthalpy change for chemical reaction is denoted aas DeltaH^(Theta) and DeltaH^(Theta) = H_(P)^(Theta) - H_(R)^(Theta) . The relation between enthalpy and internal enegry is expressed by equation: DeltaH = DeltaU +DeltanRT where DeltaU = change in internal enegry Deltan = change in number of moles, R = gas constant. Which of the following equations corresponds to the definition of enthalpy of formation at 298K ?

The enthalpy change for chemical reaction is denoted aas DeltaH^(Theta) and DeltaH^(Theta) = H_(P)^(Theta) - H_(R)^(Theta) . The relation between enthalpy and internal enegry is expressed by equation: DeltaH = DeltaU +DeltanRT where DeltaU = change in internal enegry Deltan = change in number of moles, R = gas constant. H_(2)(g) +((1)/(2))O_(2)(g) = H_(2)O(l), DeltaH_(298K) = - 68.00kcal Heat of voporisation of water at 1 atm and 25^(@)C is 10.00 kcal . The standard heat of formation (in kcal) of 1 amol vapour a 25^(@)C is

Which equation represents the reaction for the stanard enthalpy of formation , DeltaH_(f)^(@),"for"B_(5)H_(9)(g) at 298 K and 1atm?

At 298K , the enthalpy of combustion of CH_(4) corresponds to the reaction CH_(4)(g) +2O_(2)(g) rarr CO_(2)(g)+2H_(2)O(g)

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_(2)(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)

Reaction of methanol with dioxygen was carried out and DeltaU was found to be -726"kJ mol"^(-1) at 298 K. The enthalpy change for the reaction will be CH_(3)OH_((l))+(3)/(2)O_(2(g)) rarr CO_(2(g))+2H_(2)O_((l)) , DeltaH=-726"kJ mol"^(-1)

OP TANDON-Chemical Thermodynamics and Thermochemistry-Objective Question Level B
  1. Given the following data : Determine at what temperature the foll...

    Text Solution

    |

  2. Which of the following equations has/have enthalpy changes equal to De...

    Text Solution

    |

  3. The enthalpy change of which reaction corresponds to DeltaH(f)^(@) ...

    Text Solution

    |

  4. Enthalpy is equal to

    Text Solution

    |

  5. When a bomb calorimeter is sued to determine the heat of reaction, whi...

    Text Solution

    |

  6. For the reaction shown , which which is closest to the value o fDelta...

    Text Solution

    |

  7. An ice cube at 0.00^(@)C is placed is 200g of distilled water at 25^(@...

    Text Solution

    |

  8. Which reaction occurs with the greatest increase in entropy?

    Text Solution

    |

  9. The table given below lists the bond dissociation energy (E("diss")) f...

    Text Solution

    |

  10. An ideal gas is taken around the cycle ABCA as shown in P-V diagram. T...

    Text Solution

    |

  11. One gram mole of graphite and diamond were burnt to form CO(2) gas: ...

    Text Solution

    |

  12. Which among the following is not an exact differential?

    Text Solution

    |

  13. A gas expands adiabatically at constant pressure such that: T prop(1...

    Text Solution

    |

  14. 2Zn+O(2)to2ZnO," "DeltaG^(@)=-606J . . . (i) 2Zn+2Sto2ZnS," "D...

    Text Solution

    |

  15. The efficiency of the reversible cycle shown in the given figure is

    Text Solution

    |

  16. IN Haber's process of manufacturing of ammonia : N(2)(g)+3H(2)(g)to2...

    Text Solution

    |

  17. Consider the following statements: I. Change in enthalpy is always s...

    Text Solution

    |

  18. In C(2)H(4) energies of formation of (C=C) and (C-C) are -145 kJ/mol a...

    Text Solution

    |

  19. If 150 kJ of energy is needed for muscular work to walk a distance of ...

    Text Solution

    |

  20. The value of 1og(10) K for a reaction AhArrB is: (Given, Delta(r)H(2...

    Text Solution

    |