Q3. This question is about the reaction given below.
CO(g) + H2O(g) + CO.(g) +H,(9)
Enthalpy data for the reacting species are given in the table below.
Substance
CO(g)
H. O(g)
CO. CO)
H (9)
ΔΗ.
/ kJ mol-
-110
-242
-394
0
The standard enthalpy change for this reaction of carbon monoxide and steam is
А
+42 kJ mol-
B
-42 kJ mol
С
+262 kJ mol
D
-262 kJ mol
(Total 1 mark)