MCQOPTIONS
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| 1. |
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. | \[+655\,kJ\] |
| Answer» B. \[-\,655\,kJ\] | |