`Delta H_(1)^(@)` for `CO_(2)(g)`, `CO(g)` and `H_(2)O(g)` are `-393.5,-110.5` and `-241.8 kJ mol^(-1)` respectively. Standard enthalpy change for the reaction
`CO_(2)(g)+H_(2)(g) rarr CO(g) + H_(2)O(g)` is

Options

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

Explanation

To find the standard enthalpy change for the reaction:

\[ \text{CO}_2(g) + \text{H}_2(g) \rightarrow \text{CO}(g) + \text{H}_2\text{O}(g) \]

we will use the standard enthalpy of formation values given for each substance. The standard enthalpy change of the reaction can be calculated using the following formula:

\[
\Delta H_{\text{reaction}} = \Delta H_f^{\circ} \text{(products)} - \Delta H_f^{\circ} \text{(reactants)}
...