question_answer

Based on the following thermochemical equations                 \[{{H}_{2}}O(g)+C(s)\to CO(g)+{{H}_{2}}(g);\,\Delta H=131\,kJ\]                 \[CO(g)+\frac{1}{2}{{O}_{2}}(g)\to C{{O}_{2}}(g);\Delta H=-282\,kJ\]                 \[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\to {{H}_{2}}O(g);\,\Delta H=-242\,kJ\]                 \[C(s)+{{O}_{2}}(g)\to C{{O}_{2}}(g);\,\Delta H=X\,kJ\]                 The value of \[X\] is                                        [CBSE PMT 1992]

A)                 \[-393\,kJ\]        

B)                 \[-\,655\,kJ\]

C)                 \[+\,393\,kJ\]   

D)                 \[+655\,kJ\]