For which of the following equations is the enthalpy change at 250C and 1 atm equal to ∆Hf0 CH3OH, l
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a
COg+2H2g → CH3OHl
b
COg+4Hg +Og→ CH3OHl
c
COg+2Hg +Og→ CH3OHl
d
Cgraphite+2H2g +12O2g→ CH3OHl
answer is D.
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Detailed Solution
From the definition of standard enthalpy change of formation, it is the heat released during the formation of 1 mol of a compound at STP from its constituting “element's”.