Answer to Question #41369 in Other Chemistry for Sanjeev

Question #41369
The standard enthalpy of formation for which of the following is zero :- (1) CH3OH(ℓ) (2) HF(g) (3) H2O(ℓ) (4) F2(g)
Expert's answer
The standard enthalpy of formation of a compound is the change of enthalpy from the formation of 1 mole of the compound from its constituent elements, with all substances in their standard states at 1 atmosphere (1 atm or 101.3 kPa).
All elements in their standard states (oxygen gas, solid carbon in the form of graphite, etc.) have a standard enthalpy of formation of zero, as there is no change involved in their formation.
So, the standard enthalpy of formation of F2(g) is zero.
Answer: 4) F2(g)

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Assignment Expert
17.04.14, 18:03

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17.04.14, 18:02


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