Home
Class 12
CHEMISTRY
calculate the DeltaH in kJ for the follo...

calculate the `DeltaH` in kJ for the following reaction,
`C(g)+O_(2)(g) to CO_(2)(g)`
given that ,
`H_(2)O(g)+C(g) to CO(g)+H_(2),DeltaH= +131kJ`
`CO(g)+ 1/2O_(2)to CO_(2)(g),DeltaH =-282kJ`
`H_(2)(g)+1/2O_(2)(g) to H_(2)O(g),DeltaH=-242 kJ`

A

`-393`

B

`+393`

C

`+655`

D

`-655`

Text Solution

Verified by Experts

The correct Answer is:
a
on adding Eq. (i) , (ii) and (iii) we get
`C(g) + O_(2)(g) to CO_(2)(g), DeltaH=?`
`C(g)+ O_(2)(g) to CO_(2)(g)`
` DeltaH= (131 - 282-242)KJ=-393 KJ`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    BITSAT GUIDE|Exercise BITSAT Archives|15 Videos

  • CHEMICAL KINETICS

    BITSAT GUIDE|Exercise BITSAT Archives|16 Videos

  • COORDINATION COMPOUNDS

    BITSAT GUIDE|Exercise BITSAT Archives|7 Videos

Similar Questions

Explore conceptually related problems

Calculate in kJ for the following reaction : C(g) + O_(2)(g) rarr CO_(2)(g) Given that, H_(2)O(g) + C(g) + H_(2)(g) , Delta H = +131 kJ CO(g) + 1/2 O_(2)(g) rarr CO_(2)(g), " " Delta H = -242 kJ H_(2)(g) + 1/2 O_(2)(g) rarr H_(2)O(g), " "DeltaH = -242 kJ

Calculate the heat of formation of n butane from the followinf data: a. 2C_(4)H_(10)(g) +13O_(2)(g) rarr 8CO_(2)(g) +10H_(2)O(l), DeltaH = - 5757.2 kJ b. C(s) +O_(2) (g)rarrCO_(2)(g), DeltaH =- 405.4 kJ c. 2H_(2)(g) +O_(2)(g) rarr 2H_(2)O(l), DeltaH =- 572.4 kJ