Home
Class 12
CHEMISTRY
What would be the standard internal ener...

What would be the standard internal energy change for the reaction,
`OF_2(g) + H_2O (g) to O_2(g) + 2HF(g)`
at 298 K? The standard enthalpies of formation of `OF_2 (g), H_2O(g), HF(g)` are +20, +250 and -270 kJ `"mol"^(-1)`

A

`352 xx 10^2 kJ`

B

`410 xx 10^5 kJ`

C

`3.12 xx 10^2 kJ`

D

`5.26 xx 10^4 kJ`

Text Solution

Verified by Experts

The correct Answer is:
C
`3.12 xx 10^2 kJ`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL ENERGETICS

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS (SINGLE OPTION CORRECT TYPE )|16 Videos

  • CHEMICAL ENERGETICS

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS (ONE OR MORE THAN ONE OPTION CORRECT TYPE )|2 Videos

  • CHEMICAL ENERGETICS

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS (ONE OR MORE THAN ONE OPTION CORRECT TYPE )|2 Videos

  • CHEMICAL DYNAMICS

    MTG-WBJEE|Exercise WB JEE Previous Years Questions (CATEGORY 3 : One or More than One Option Correct Type)(2 Marks)|2 Videos

  • CHEMICAL EQUILIBRIA

    MTG-WBJEE|Exercise WB JEE PREVIOUS YEARS QUESTIONS (CATEGORY 2 : Single Option Correct Type )|1 Videos

Similar Questions

Explore conceptually related problems

Calculate the standard enegry change for the reaction: OF_(2)(g) +H_(2)O(g) rarr O_(2)(g) +2HF(g) at 298K The standard enthalpies of formation of OF_(2)(g), H_(2)O(g) , and HF(g) are +20, -250 , and -270 kJ mol^(-1) , respectively.

What will be the standard internal energy change for the reaction at 298 K ? OF_(2(g))+H_(2)O_((g))+2HF_((g)),DeltaH^(@)=-310kJ

The standard Gibbs energy change for the reaction 2SO_2(g) +O_2(g) to 2SO_3 (g) is -142 kJ mol^(-1) at 300 K. Calculate equilibrium constant.

Find the value of Delta_(f) H^(@) for the reaction N_(2) O_(4) (g) + 3 CO(g) rarr N_(2) O (g) + 3 CO_(2) (g) Standard enthalpies of formation of CO(g), CI_(2) (g), N_(2) O (g) , and N_(2) O_(4) (g) are - 110, - 393, 81 , and 9.7 kJ mol^(-1) , respectively. Strategy : The standard enthalpy change of a reaction is equal to the sum of the standard molar enthalpie of formation of the products each miltiplied by its stiochiometric coefficient in the balanced equation, minus the corresponding sum of the standard molar enthalpies of formation of the reactants

Calculate the standard enthalpy of formation of ethylene, C_(2)H_(4)(g) from the following thermochemical equation : C_(2)H_(4)(g) + 3O_(2)(g) to 2CO_(2)(g) + 2H_(2)O(g) Delta_(r)H^(@) = -1323 kJ Given the standard enthalpy of formation of CO_(2)(g) and H_(2)O(g) are - 393.5 and -249 kJ mol^(-1) respectively.