A) + 97 kJ
B) - 97 kJ
C) + 107 kJ
D) - 107 kJ
Correct Answer: B
Solution :
Heat of formation is the amount of heat absorbed or liberated when one mole of a substance is formed from its constituent element. When 2 moles of HCl is formed heat liberated = 194 kJ \[\therefore \]When 1 mol of HCl is formed heat liberated \[=\frac{194}{2}=97\,kJ\] \[\therefore \] \[\Delta {{H}_{f}}=-97\,kJ\]You need to login to perform this action.
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