Date | November 2010 | Marks available | 1 | Reference code | 10N.1.hl.TZ0.16 |
Level | HL | Paper | 1 | Time zone | TZ0 |
Command term | Question number | 16 | Adapted from | N/A |
Question
Given the enthalpy change for the reaction below:
\[\begin{array}{*{20}{l}} {{\text{2}}{{\text{H}}_{\text{2}}}{\text{(g)}} + {{\text{O}}_{\text{2}}}{\text{(g)}} \to {\text{2}}{{\text{H}}_{\text{2}}}{\text{O(l)}}}&{\Delta {H^\Theta } = - 572{\text{ kJ}}} \end{array}\]
which statement is correct?
A. The standard enthalpy change of combustion of \({{\text{H}}_2}{\text{(g)}}\) is \( - 286{\text{ kJ}}\,{\text{mo}}{{\text{l}}^{ - 1}}\).
B. The standard enthalpy change of combustion of \({{\text{H}}_2}{\text{(g)}}\) is \( + 286{\text{ kJ}}\,{\text{mo}}{{\text{l}}^{ - 1}}\).
C. The standard enthalpy change of formation of \({{\text{H}}_2}{\text{O(l)}}\) is \( - 572{\text{ kJ}}\,{\text{mo}}{{\text{l}}^{ - 1}}\).
D. The standard enthalpy change of formation of \({{\text{H}}_2}{\text{O(l)}}\) is \( + 572{\text{ kJ}}\,{\text{mo}}{{\text{l}}^{ - 1}}\).
Markscheme
A