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The standard heat of formation of a compound is the:

a)

Change in enthalpy for the production of 1 mole of the compound at STP

b)

Change in enthalpy for the formation of 1 mole of the compound form its elements

c)

Change in enthalpy for the formation of 1 mole of the compound form its elements at 298 K and 1 atmospheric pressure

d)

Change in enthalpy for the formation of 1 mole of the compound form its elements at 25°C and a pressure of 760 mm of Hg.



Question ID - 103453 | SaraNextGen Top Answer

The standard heat of formation of a compound is the:

a)

Change in enthalpy for the production of 1 mole of the compound at STP

b)

Change in enthalpy for the formation of 1 mole of the compound form its elements

c)

Change in enthalpy for the formation of 1 mole of the compound form its elements at 298 K and 1 atmospheric pressure

d)

Change in enthalpy for the formation of 1 mole of the compound form its elements at 25°C and a pressure of 760 mm of Hg.

1 Answer
127 votes
Answer Key / Explanation : (c,d) -

Change in enthalpy for the formation of 1 mole of the compound form its elements at 298 K and 1 atmospheric pressure

Change in enthalpy for the formation of 1 mole of the compound form its elements at 25°C and a pressure of 760 mm of Hg.

127 votes


127