How do we formulate DeltaH_f^@ for "carbon tetrachloride", and HCl?

1 Answer
anor277
Sep 2, 2017

We can quote DeltaH_f^@, the enthalpy change of formation.....

Explanation:

And DeltaH_f^@ represents the enthalpy associated with formation of one mole of substance from its elements in their standard states under standard conditions, i.e. for "CCl"_4:

C(s) + 2Cl_2(g)rarr"CCl"_4(l)

And DeltaH_"rxn"^@-=DeltaH_f^@("CCl"_4)

And likewise......

1/2H_2(g)+1/2Cl_2(g)rarrHCl(g)

And DeltaH_"rxn"^@-=DeltaH_f^@(HCl)

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