A) \[-{{x}_{2}}\,kJ\,mo{{l}^{-1}}\]
B) \[+{{x}_{3}}\,kJ\,mo{{l}^{-1}}\]
C) \[-{{x}_{4}}\,kJ\,mo{{l}^{-1}}\]
D) \[-{{x}_{1}}\,kJ\,mo{{l}^{-1}}\]
Correct Answer: A
Solution :
Enthalpy of formation: The amount of heat evolved or absorbed during the formation of 1 mole of a compound from its constituent elements is known as heat of formation. So, the correct answer is: \[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\to {{H}_{2}}O(l),\,\Delta H=-{{x}_{2}}\,kJ\,mo{{l}^{-1}}\]You need to login to perform this action.
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