The following two reactions are known : `Fe_(2) O_(3(s)) + 3CO_((g)) to Fe_((s)) + 3CO_(2(g)) , Delta H = =- 26.8` kJ
`FeO2_((s)) + CO_((g)) to Fe_((s)) + CO_(2(g)) , Delta H = -16.5` kJ
The value `Delta H` for the following reaction
`Fe_(2) O_(3(s)) + CO_((g)) to 2FeO_((s)) + CO_(2(g))` is

Options

A. `+6.2` kJ
B. `+ 10.3` kJ
C. `-43.3` kJ
D. `- 10.3` kJ

Answer

A

Explanation

`Fe_(2) O_(3(s)) + CO_((g)) to 2FeO_((s)) + CO_(2(g))`
`Delta H= - 26.8+ 33.0= +6.2` kJ
`therefore` Correct answer is (A)