Home
Class 12
CHEMISTRY
For complete combustion of ethanol, C(...

For complete combustion of ethanol,
`C_(2)H_(5)OH(l) + 3O_(2)(g) rarr 2CO_(2)(g) + 3H_(2)O(l)` the amount of heat produced as measured in bomb calorimeter is `1364.47 kJ mol^(-1)` at `25^(@)C`. Assuming ideality the enthalpy of comustion, `Delta_(c)H` for the reaction will be (`R = 8.314 kJ mol^(-1)`)

A

`- 1366.95 kJ mol^(-1)`

B

`- 1361.95 kJ mol^(-1)`

C

`- 1460.50 kJ mol^(-1)`

D

`- 1350.50 kJ mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
`C_(2)H_(5)OH(l) + 3O_(2)(g) rarr 2CO_(2)(g) + 3H_(2)O(l)`
`Delta n_(g) = 2 - 3 = - 1`
:. `Delta H = - 1364.47 + (1) xx 8.314 xx 10^(-3) xx 298`
`= - 1366.93 kJ mol^(-1)`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Recent Examination Question|15 Videos

  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-II)|85 Videos

  • THE SOLID STATE

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|11 Videos

  • UNIT TEST - 3

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|59 Videos

Similar Questions

Explore conceptually related problems

For the reaction : C_(3)H_(8)(g) + 5O_(2) rarr 3CO_(2)(g) + 4H_(2)O(l) a constant temperature, Delta H - Delta U is

For the reaction, C_(2) H_(4) (g) + 3O(2) (g) to 2 CO_(2) (g) + 2H_(2) O(I), Delta E = -1415 KJ. then Delta H at 27^(@) C is

For the reaction : C_(2)H_(4)(g) + 3 O_(2)(g) rarr 2 CO_(2)(g) + 2 H_(2)O(l) at 298 K, Delta U = - 1415 kJ . If R = 0.0084 kJ K^(-1) . Then Delta H is equal to

In the reaction : CO_(2)(g) + H_(2)(g) hArr CO(g) + H_(2)O(g) , Delta H = 2.8 kJ . Delta H represents

Calculate the hest of reaction of the following reaction : C_(6)H_(12)O_(6(s)) + rarr 6CO_(2(g)) + 6H_(2)O_((g)) : Delta H = ?