The `DeltaH_(f)^(@)` for `CO_(2)(g)`, CO(g) and `H_(2)O(g)` are `-395.5,-110.5` and `-241.8" kJ" mol^(-1)` respectively. The standard enthalpy change in (in kJ) for the reaction
`CO_(2)(g)+H_(2)(g)toCO(g)+H_(2)O(g)` is

Options

A. 524.1
B. 41.2
C. -262.5
D. `-41.2`

Answer

B

Explanation

`Delta H =(Sigma Delta H_(P)- Sigma Delta H_(R))`
`=(-110.5-241.8)-(-393.5) kJ mol^(-1)`
`=41.2 kJ mol^(-1)`