delta H

[JChen_2I]

Do we have to know how to calculate delta H? If yes, how?

[Andrew Pfeiffer 2E]

We don't have to be able to calculate delta H yet, but eventually, when we go over enthalpy in more depth, we will learn how to calculate it.

[Justin Sarquiz 2F]

All you need to know about enthalpy so far is that negative enthalpy means exothermic and a positive enthalpy means endothermic. Therefore, heating up an endothermic reaction causes equilibrium to favor products, and cooling an exothermic reaction causes equilibrium to favor products too.

[Jasmine Vallarta 2L]

For now, we just need to know the value of delta H to classify a reaction as endo/exothermic

[Renee Grange 1I]

For right now, we only need to use delta H to determine is a reaction is endothermic or exothermic. If delta H is positive, the reaction is endothermic. If delta H is negative, the reaction is exothermic.

[preyasikumar_2L]

I think last class Dr. Lavelle mentioned that there are three(?) ways of calculating delta H and that he'd teach us how to do it (if not now then eventually). However, for now it is important to know that positive delta H means that the reaction is endothermic and that heating the system will shift the reaction forward (towards the products), and that negative delta H means that the reaction is exothermic and that heating the system will shift the reaction backward (towards the reactants).