Question

What is meant by the reference form of an element? What is the standard enthalpy of formation of an element in its reference form?

Answer 1

+++++++++++++++/////////Hope Help you/////////+++++++++
??????
????
????
?????????????????


The result is 346 kJ, which is thestandard enthalpy change offormation for the creation of variable "C". The standard enthalpy of formation of a pureelement is in its reference form its standard enthalpy formationis zero. Carbon naturally exists as graphite and diamond.

Answer 2

The standard enthalpy of formation is a measure of the energy released or consumed when one mole of a substance is created under standard conditions from its pure elements. The symbol of the standard enthalpy of formation is ΔH f. = A degree signifies that it's a standard enthalpy change.