What is the difference between “ Pure compound ” and “ pure element ”? I know th

Question

What is the difference between “ Pure compound ” and “ pure element ”?
I know the difference between a compound and an element, but I don’t understand what does “ pure ” do in these terms. Thank you.
P.s. it’s about standard enthalpy of formation for pure compound and pure element in its standard state What is the difference between “ Pure compound ” and “ pure element ”?
I know the difference between a compound and an element, but I don’t understand what does “ pure ” do in these terms. Thank you.
P.s. it’s about standard enthalpy of formation for pure compound and pure element in its standard state
I know the difference between a compound and an element, but I don’t understand what does “ pure ” do in these terms. Thank you.
P.s. it’s about standard enthalpy of formation for pure compound and pure element in its standard state I know the difference between a compound and an element, but I don’t understand what does “ pure ” do in these terms. Thank you.
P.s. it’s about standard enthalpy of formation for pure compound and pure element in its standard state

Explanation / Answer

Pure compound and Pure Element are pure substances. Here pure in a sense indicates free energy of the system which also means enthalpy of formation.

Pure element means it contains a single element with no traces of impurities. It is possible ideally, but in reality, the pure element does not exist. Neither does pure compound. Free energy of the system decreases due to impurities and also melting point thereby reducing its enthalpy. Similarly, pure compound. And pure element cannot break down into pieces but a pure compound can.

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