Home
Class 11
CHEMISTRY
Calculate the standard heat of formation...

Calculate the standard heat of formation `(triangleH_(f)^@)" of "C_(6)H_(12)O_(6)(s)` from the following data:
(i) `triangleH_c" of "C_6H_(12)O_6(s)=-2816"kJ mole"^(-1)`
(ii) `triangleH_(f)^@" of "CO_(2)(g)=-395.5"kJ mole"^(-1)`
(iii) `triangleH_(f)^@" of "H_(2)O(l)=-285.9"kJ mole"^(-1)`

Text Solution

AI Generated Solution

To calculate the standard heat of formation \((\Delta H_f^\circ)\) of \(C_6H_{12}O_6(s)\), we can use the given data about the combustion of glucose and the formation of carbon dioxide and water. ### Step-by-Step Solution: 1. **Write the combustion reaction of glucose**: The combustion of glucose can be represented as: \[ C_6H_{12}O_6(s) + O_2(g) \rightarrow 6CO_2(g) + 6H_2O(l) ...
Promotional Banner

Topper's Solved these Questions

  • SAMPLE QUESTION PAPER -1

    ICSE|Exercise Match the following:|1 Videos
  • SAMPLE QUESTION PAPER

    ICSE|Exercise Question|69 Videos
  • SAMPLE QUESTION PAPER -2

    ICSE|Exercise Questions & Answers|10 Videos

Similar Questions

Explore conceptually related problems

Calculate the standard heat of formation of C_2H_5OH(l) from the following data: (a) C_2H_5OH (l) + 2O_2(g) to 2CO_2(g) + 3H_2O (l) , DeltaH^@ = - 1366.5 kJ (b) Delta_f H^@ [ CO_2] = -393.5 kJ mol^(-1), Delta_f H^@ [ H_2O(l)] = -285.5 kJ mol^(-1) .

Calculate the standard enthalpy of formation of CH_(3)OH(l) from the following data: CH_(3)OH(l)+3/2O_(2)(g) rarr CO_(2)(g)+2H_(2)O(l), …(i), Delta_(r)H_(1)^(Θ)=-726 kJ mol^(-1) C(g)+O_(2)(g) rarr CO_(2)(g), …(ii), Delta_(c )H_(2)^(Θ)=-393 kJ mol^(-1) H_(2)(g)+1/2O_(2)(g) rarr H_(2)O(l), ...(iii), Delta_(f)H_(3)^(Θ)=-286 kJ mol^(-1)

Calculate the enthalpy of formation of sucrose (C_11H_22O_11) from the following data: (i) C_(12)H_(22)O_(11) + 12O_(2) rarr 12CO_(2) + 11 H_(2)O, DeltaH = -5200.7 kJ mol^(-1) (ii) C + O_(2) rarr CO_(2), DeltaH = -394.5 kJ mol^(-1) (iii) H_(2) + 1/2 O_(2) rarr H_(2)O, DeltaH = H_(2)O, DeltaH = -285.8 kJ mol^(-1) .

Calculate enthalpy of formation of methane (CH_4) from the following data : (i) C(s) + O_(2)(g) to CO_(2) (g) , Delta_rH^(@) = -393.5 KJ mol^(-1) (ii) H_2(g) + 1/2 O_(2)(g) to H_(2)O(l) , Deta_r H^(@) = -285.5 kJ mol^(-1) (iii) CH_(4)(g) + 2O_(2)(g) to CO_(2)(g) + 2H_(2)O(l), Delta_(r)H^(@) = -890.3 kJ mol^(-1) .

Calculate the resonance energy of C_(6)H_(6) using kekule formula of C_(6)H_(6) from the following data. a. Delta_(f)H^(Theta) for C_(6)H_(6) =- 358.5 kJ mol^(-1) b. Heat of atomisation of C =716.8 kJ mol^(-1) c. Bond enegry of C-H, C-C, C=C and H-H are 490,340, 620, 436.9 kJ "mole"^(-1) respectively.

Calculate the standard Gibbs free energy change from the free energies of formation data for the following reaction: C_(6)H_(6)(l) +(15)/(2)O_(2)(g) rarr 6CO_(2)(g) +3H_(2)O(g) Given that Delta_(f)G^(Theta) =[C_(6)H_(6)(l)] = 172.8 kJ mol^(-1) Delta_(f)G^(Theta)[CO_(2)(g)] =- 394.4 kJ mol^(-1) Delta_(f)G^(Theta) [H_(2)O(g)] =- 228.6 kJ mol^(-1)

Calculate the heat of formation of methanol (CH_3OH) from thhe following data: CH_3OH(l) + 3/2O_2(g) to CO_2(g) + 2H_2O (l),Delta =-726 kJ C(s) + O_2(g) to CO_2(g) , DeltaH = -394 kJ H_2(g) + 1/2 O_2(g) to H_2O(l) , Delta H = -286 kJ

If triangleH_(f) (C_(2)H_(5)-S-C_(2)H_(5))=-147 kJ/mole and triangleH_(f) (C_(2)H_(5)-S-S-C_(2)H_(5))=-202 Kj/mole and triangleH_(f) (S) (g)=+ 223 kJ/mole then the S-S bond energy will be

Find bond enthalpy of S-S bond from the following data: C_(2)H_(5)-S-C_(2)H_(5)," "DeltaH_(f)^(@)=-147.2kJ" "mol^(-1) C_(2)H_(5)-S-S-C_(2)H_(5)," "DeltaH_(f)^(@)=-201.9kJ" "mol^(-1) S(g)," "DeltaH_(f)^(@)=222.8kJ" "mol^(-1)

Calculate the standard internal energy change for the following reactions at 25^(@)C : 2H_(2)O_(2)(l) rarr 2H_(2)O(l) +O_(2)(g) Delta_(f)H^(Theta) at 25^(@)C for H_(2)O_(2)(l) =- 188 kJ mol^(-1) H_(2)O(l) =- 286 kJ mol^(-1)

ICSE-SAMPLE QUESTION PAPER -1-Answer the following questions:
  1. Write the structural formula of the compounds having the following IUP...

    Text Solution

    |

  2. The first ionisation enthalpy of nitrogen (Z=7) is greater than that o...

    Text Solution

    |

  3. An unsaturated hydrocarbon 'A' adds two molecules of H(2) and on reduc...

    Text Solution

    |

  4. How will you convert the following: (i) Ethyl alcohol to ethene (i...

    Text Solution

    |

  5. (a) An atomic orbital has n = 3. What are the possible values of l? ...

    Text Solution

    |

  6. (i) Which one of the following is more paramagnetic Fe^(2+) or Fe^(3+)...

    Text Solution

    |

  7. Hydrogen combines with oxygen and forms two compounds. In the first co...

    Text Solution

    |

  8. 750 ml of N2 gas when taken in a vessel has pressure equal to 900 mm o...

    Text Solution

    |

  9. How dould you account for the following : The stability of +5 oxida...

    Text Solution

    |

  10. Calculate the standard heat of formation (triangleH(f)^@)" of "C(6)H(1...

    Text Solution

    |

  11. Which of the following possesses higher entropy: (1) Gaseous substan...

    Text Solution

    |

  12. The gas leaked from a storage tank of the Union Carbide plant in Bhopa...

    Text Solution

    |

  13. Discuss the optical isomerism of lactic acid.

    Text Solution

    |

  14. Write the molecular orbital configuration of N2. Calculate the bond or...

    Text Solution

    |

  15. (ii) Find the oxidation number of: (1) S in Na(2)S(4)O(6) (2) Cr i...

    Text Solution

    |

  16. Give reasons for the following: (1) HNO3 acts only as an oxidising age...

    Text Solution

    |

  17. How will you convert the following? (1) Sodium acetate to methane ...

    Text Solution

    |

  18. (i) Identify the compounds A and B. (1) C(6)H(5)COONa+NaOH overset(C...

    Text Solution

    |

  19. 15 moles of N2 is mixed with 20 moles of H2 in an 8 litre vessel. 5.6 ...

    Text Solution

    |

  20. On the basis of Le- Chatellier's principle ,discuss the condition for ...

    Text Solution

    |