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Chemistry
The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound
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Q. The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound
Thermodynamics
A
is always negative
17%
B
is always positive
36%
C
may be positive or negative
40%
D
is never negative
7%
Solution:
The enthalpy of formation of a compound may be positive or negative as it can be exothermic or endothermic process.