Home
Class 12
CHEMISTRY
Using the data (all values are in kiloca...

Using the data (all values are in kilocalorie per mole at `25^(@)C`) given below, calculate the bond enegry of `C-C` and `C-H` bonds.
`DeltaH^(Theta)` combustion of ethane `=- 372.0`
`DeltaH^(Theta)` combustion of propane `=- 530.0`
`DeltaH^(Theta)` for `C`( garphite) `rarr C(g) =+ 172.0`
Bond enegry of `H-H` bond `=+ 104.0`
`Delta_(f)H^(Theta) of H_(2)O(l) =- 68.0`
`Delta_(f)H^(Theta) of CO_(2)(g) =- 94.0`

Text Solution

Verified by Experts

The correct Answer is:
39841.56 J
(ii) `82 kcal mol^(-1)`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS AND THERMOCHEMISTRY

    FIITJEE|Exercise ASSIGNMENT PROBLEMS (OBJECTIVE) LEVEL-I|49 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    FIITJEE|Exercise ASSIGNMENT PROBLEMS (OBJECTIVE) LEVEL-I (REASONING TYPE QUESTIONS)|2 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    FIITJEE|Exercise ASSIGNMENT PROBLEMS (SUBJECTIVE) LEVEL -1 NUMERICAL PROBLEMS|8 Videos

  • TEST PAPERS

    FIITJEE|Exercise CHEMISTRY|747 Videos

  • TRANSITION ELEMENTS & COORDINATION COMPOUNDS

    FIITJEE|Exercise MATCHIG LIST TYPE QUESTIONS|1 Videos

Similar Questions

Explore conceptually related problems

Using the data ( all vaues in kcal mol^(-1) at 25^(@)C) given below, calculate bond energy of C-C and C-H bonds. C_((s))rarr C_((g)), DeltaH=172 H_(2) rarr 2H, DeltaH=104 H_(2)+(1)/(2)O_(2) rarr H_(2)O_((l)), DeltaH=-68.0 C_((s))+O_(2) rarr CO_(2), Delta H=-94.0 Heat of combustion of C_(20H_(6)=-372.0 Heat of combustion of C_(3)H_(8)=-530.0

Calculate the enthalpy of combustion of benzene (l) on the basis of the following data: a. Resonance energy of benzene (l) =- 152 kJ// mol b. Enthalpy of hydrogenation of cyclohexene (l) =- 119 kJ//mol c. Delta_(f)H^(Theta)C_(6)H_(12)(l) =- 156 kJ mol^(-1) d. Delta_(f)H^(Theta) of H_(2)O(l) =- 285.8 kJ mol^(-1) e. Delta_(f)H^(Theta)of CO_(2)(g) =- 393.5 kJ mol^(-1)

The enthalpy change for the combustion of N_(2)H_(4)(l) (Hydrazine) is -622.2 kJ mol^(-1) . The products are N_(2)(g) and H_(2)O(l) . If Delta_(f)H^(Theta) for H_(2)O(l) is -285.8 kJ mol^(-1) . The Delta_(f)H^(Theta) for hydrazine is

Calculate Deltah for the eaction BaCO_(3)(s)+2HCI(aq) rarr BaCI_(2)(aq)+CO_(2)(g)+H_(2)O(l) Delta_(f)H^(Theta) (BaCO_(3)) =- 290.8 kcal mol^(-1), Delta_(f)H^(Theta) (H^(o+)) =0 Delta_(f)H^(Theta) (Ba^(++)) = - 128.67 kcal mol^(-1) , Delta_(f)H^(Theta)(CO_(2)) =- 94.05 kcal mol^(-1) , Delta_(f)H^(Theta) (H_(2)O) =- 68.32 kcal mol^(-1)

Calculate the heat produced when 3.785 L of octabe reacts with oxygeb to form carbon mono oxide and water vapour at 25^(@)C . (Density of octane is 0.75025 g mL^(-1)). Delta_(comb)H^(Theta)(C_(8)H_(18)) =- 1302.7 kcal, Delta_(f)H^(Theta) (CO_(2)) =- 94.05 kcal, Delta_(f)H^(Theta) (H_(2)O) =- 64.32 kcal, Delta_(f)H^(Theta) (CO) =- 26.41 kcal mo^(-1)

Using the bond enthalpy data given below, calculate the enthalpy of formation of acetone (g). Bond enegry C-H = 413.4 kJ mol^(-1) , Bond enegry C-C = 347.0 kJ mol^(-1) , Bond enegry C=O = 728.0 kJ mol^(-1) , Bond enegry O=O = 495.0 kJ mol^(-1) , Bond enegry H-H = 435.8 kJ mol^(-1) , Delta_("sub")H^(Theta)C(s) = 718.4 kJ mol^(-1)