5 posts • Page 1 of 1
I think its the same symbol for both freezing and melting which is ∆Hfus. It's just freezing is from liquid to solid so the value is negative because the reaction is exothermic (-∆Hfus) where as melting is endothermic (+∆Hfus).
Sorry if I'm totally off, but wouldn't the negative sign be required and not arbitrary in this case. I believe freezing is the reverse reaction of melting/fusion. Since melting/fusion is endothermic and therefore has a positive enthalpy value, wouldn't freezing be exothermic and therefore have a negative enthalpy value?
Who is online
Users browsing this forum: No registered users and 1 guest