Home
Class 11
CHEMISTRY
The enthalpies for the following reactio...

The enthalpies for the following reactions `(DeltaH^(Theta))` at `25^(@)C` are given below.
a. `(1)/(2)H_(2)(g) +(1)/(2)O_(2)(g) rarr OH(g)`
`DeltaH = 10.06 kcal`
b. `H_(2)(g) rarr 2H(g), DeltaH = 104.18 kcal`
c. `O_(2)(g) rarr 2O(g), DeltaH = 118.32 kcal`
Calculate the `O-H` bond energy in the hydroxyl radical.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives (True/False)|2 Videos

  • STOICHIOMETRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Subjective|33 Videos

Similar Questions

Explore conceptually related problems

The ethalpies for the following reactions at 25^(@)C are given as: (1)/(2)H_(2)(g)+(1)/(2)O_(2)(g) rarr OH (g), DeltaH = 10.06 kcal H_(2)(g)rarr 2H(g),DeltaH = 104.18 kcal O_(2)(g) rarr 2O(g),DeltaH = 118.32 kcal Calculate the O-H bond enegry in the OH group.

H_(2)(g)+(1)/(2)O_(2)(g)rarrH_(2)O(l), DeltaH =- 286 kJ 2H_(2)(g)+O_(2)(g)rarr2H_(2)O(l)……………kJ(+-?)

H_2(g) + 1/2 O_2(g) to H_2O (l), DeltaH = - 286 kJ 2H_2(g) + O_2(g) to 2H_2O (l), DeltaH = …kJ

From the following data at 25^(@)C , calculate the bond energy of O – H bond: (i) H_(2)(g) to 2H(g), Delta H_(1) = 104.2 kcal (ii) O_(2)(g) to 2O(g), DeltaH_(2) = 118.4 kcal (iii) H_(2)(g) + 1/2 O_(2)(g) to H_(2)O(g), Delta H_(3) = -57.8 k cal

Calculate in kJ for the following reaction : C(g) + O_(2)(g) rarr CO_(2)(g) Given that, H_(2)O(g) + C(g) + H_(2)(g) , Delta H = +131 kJ CO(g) + 1/2 O_(2)(g) rarr CO_(2)(g), " " Delta H = -242 kJ H_(2)(g) + 1/2 O_(2)(g) rarr H_(2)O(g), " "DeltaH = -242 kJ

Find the heat of reaction 2Na(s) +1//2O_(2)(g) rarr Na_(2)O(s) Given: Na_(2)O(s) +H_(2)Orarr 2NaOH, DeltaH =- 56 kcal 2Na + 2H_(2)O rarr 2NaOh +H_(2),DeltaH =- 88 kcal H_(2) +1//2O_(2)rarr H_(2)O, DeltaH =- 68 kcal

The enthalpy changes for the following reactions at 298k and 1atm are given below: a. CH_(3)COOH(l)+2O_(2)(g) rarr 2CO_(2)(g) +2H_(2)O(l),DeltaH =- 874 kJ b. CH_(3)CH_(2)OH(l)+3O_(2)(g)rarr 2CO_(2)(g)+3H_(2)O(l),DeltaH =- 1363 kJ Calculate the internal enegry changes for these recaitons.

Given the following data H_2(g) rarr2H(g),DeltaH=104.2kcal Cl_2 (g) rarr 2Cl(g), DeltaH = 58 kcal HCl = H(g) +Cl(g) , DeltaH = 103.2 kcal The standard enthalpy of formation of HCl(g) is

Find the heat of formation of ethyl alcohol for following data C(s) +O_(2)(g) rarr CO_(2)(g) DeltaH =- 94 kcal H_(2)(g) +1//2O_(2)(g) rarr H_(2)O(l), DeltaH =- 68 kcal C_(2)H_(5)OH(l)+3O_(2)(g) rarr 2CO_(2)(g) +3H_(2)O(l) DeltaH =- 327 kcal

Calculate the heat of formation of n butane from the following data: a. 2C_(4)H_(10)(g) +13O_(2)(g) rarr 8CO_(2)(g) +10H_(2)O(l), DeltaH = - 5757.2 kJ b. C(s) +O_(2) (g)rarrCO_(2)(g), DeltaH =- 405.4 kJ c. 2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(l), DeltaH =- 572.4 kJ

CENGAGE CHEMISTRY ENGLISH-THERMODYNAMICS-Archives (Subjective)
  1. The enthalpies for the following reactions (DeltaH^(Theta)) at 25^(@)C...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  4. The following statement is true only under some specific conditions. W...

    Text Solution

    |

  5. The bond dissociation energies of gaseous H(2),Cl(2), and HCl are 100,...

    Text Solution

    |

  6. The standard molar heat of formation of ethane, carbon dioxide and wat...

    Text Solution

    |

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

    Text Solution

    |

  8. The enthalpy of combustion of H(2), cyclohexene (C(6)H(10)) and cycloh...

    Text Solution

    |

  9. CsOH +HCI rarr CsCI +H(2)O, DeltaH =- 13.4 kcal mol^(-1)……….(i) CsOH...

    Text Solution

    |

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

    Text Solution

    |

  11. Compute the heat of formation of liquid methyl alcohol in kilojoule pe...

    Text Solution

    |

  12. From the following data, calculate the enthalpy change for the combust...

    Text Solution

    |

  13. The standard heat of formation values of SF(6)(g), S(g), and F(g) are ...

    Text Solution

    |

  14. Show that the reaction CO(g) +(1//2)O(2)(g) rarr CO(2)(g) at 300K ...

    Text Solution

    |

  15. A sample of argon gas at 1atm pressure and 27^(@)C expands reversibly ...

    Text Solution

    |

  16. Determine the enthalpy of formation of B(2)H(6)(g) in kJ/mol of the fo...

    Text Solution

    |

  17. The standart potential of the following cell is 0.23 at 15^(@)C and 0....

    Text Solution

    |

  18. When 1pentyne (A) is treated with 4N alcoholic KOH at 175^(@)C, it is ...

    Text Solution

    |

  19. Two moles of a perfect gas undergo the following processes: a. A rev...

    Text Solution

    |

  20. C(v) values of He is always (3R)/(2) but C(v) values of H(2) is (3R)/(...

    Text Solution

    |