Home
Class 12
CHEMISTRY
The standard enthalpics of formation of ...

The standard enthalpics of formation of `CO,NO_(2)` and `CO_(2)` are `110.5 KJ mol^(-1), -33.2 KJ mol^(-1)` and `-393.5 KJ mol^(1)` respectively. The standard enthalpy of the reaction
`4CO(g)+2NO_(2)(g)to4CO_(2)(g)+N_(2(g))+N_(2(g))` is

A

`-1065.6kJ`

B

`-200kJ`

C

`-700kJ`

D

`850kJ`

Text Solution

Verified by Experts

The correct Answer is:
A
`DeltaH_(rxn)=4xx(-393.5)-4x(110.5)-2xx(33.2)`
`DeltaH_(rxn)=-1065.5KJ`
Promotional Banner

Topper's Solved these Questions

  • CHEMISTRY AT A GLANCE

    ALLEN|Exercise INORGANIC CHEMISTRY|300 Videos

  • CHEMISTRY AT A GLANCE

    ALLEN|Exercise ORGANIC CHEMISTRY|483 Videos

  • Chemical Equilibrium

    ALLEN|Exercise All Questions|24 Videos

  • ELECTROCHEMISTRY

    ALLEN|Exercise EXERCISE -05 [B]|38 Videos

Similar Questions

Explore conceptually related problems

The enthalpies of formation of CO and CO_(2) are -110.5 KJ mol^(-1) and -393.5 KJ mol^(-1) respectively. The enthalpy of combustion of carbon monoxide is

The standard enthalpies of formation of CO_(2)(g) and HCOOH (l) are -393.7 kJ"mol"^(-1) and -409.2 kJ"mol"^(-1) respectively. Which of the following statements are correct?

The standard enthalpy of formation of H_(2)(g) and Cl_(2)(g) and HCl(g) are 218 kJ//mol , 121.88 kJ//mol and -93.31 kJ//mol respectively. Calculate standard enthalpy change in kJ for (1)/(2)H_(2)(g)+(1)/(2)Cl_(2)(g)toHCl(g)

The standard enthalpies fo formation of CO_(2) (g), H_(2) O (1) , and glucose (s) at 25^(@)C are - 400 kJ mol^(-1), - 300 kJ mol^(-) , and - 1300 kJ mol^(-1) , respectively. The standard enthalply of combustion per gram of glucose at 25^(@)C is

DeltaH_(t)^(@) for CO_(2)(g) and H_(2)O(g) are -393.5, -110.5 and -241.8 kJ"mol"^(-1) respectively. The standard enthalpy change (in kJ) for the reaction. CO_(2)(g) + H_(2)(g) to CO(g) + H_(2)O(g) is:

Enthalpies of formation of CO(g), CO_(2)(g),N_(2)O(g) and N_(2)O_(4)(g) are -110, -393, 81 and 9.7 kJ mol^(-1) respectively. Calculate Delta_(r)H for the reaction: N_(2)O_(4)(g) + 3CO(g) to N_(2)O(g) + 3CO_(2)(g) .