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- #Chemical Thermodynamics
What is the standard enthalpy of formation of gas?
Option: 1
Positive
Option: 2
Negative
Option: 3
Zero
Option: 4
Can be positive or negative both
Answers (1)
The standard enthalpy of formation for an element in its standard state is ZERO because elements in their standard form are not formed, they are naturally in that state. As the natural state of Oxygen is gas hence enthalpy of formation of Oxygen gas is zero.
Hence, Option number (3) is correct
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