Homework Help

Every chemical reaction has a DH value. What does the symbol "DH" mean?

user profile pic

cenicienta | Valedictorian

Posted May 19, 2011 at 6:55 AM via web

dislike 1 like

Every chemical reaction has a DH value. What does the symbol "DH" mean?

1 Answer | Add Yours

Top Answer

user profile pic

enotechris | College Teacher | (Level 2) Senior Educator

Posted May 19, 2011 at 7:16 AM (Answer #1)

dislike 0 like

Every chemical reaction is either endothermic (heat absorbing) or exothermic (heat producing.)  Capital H in chemistry (not to be confused with the element Hydrogen!!) will be found with reaction formulas and refers to the Heat of Formation, or the amount of thermal energy absorbed or released in the chemical reaction.  The change in the Heat of Formation occurs when the reaction proceeds; the concept of the thermal change in the reactants is usually expressed as "Delta" H, or ∆H.

Join to answer this question

Join a community of thousands of dedicated teachers and students.

Join eNotes