Standard Enthalpy of Formation

[Yajing Feng 2J]

Hello,

In the Friday (1/21) lecture, Dr. Lavelle highlights method 3 of finding the standard reaction enthalpy with the standard enthalpy of formation of the products and reactants. I was wondering if the numbers for the standard enthalpies of formation will be given or will we have to calculate those individually?

[Emma Kelly 3L]

Hello! I believe we'll be given these values; in that example, I believe Dr. Lavelle said he got the values from a table.
(Although we may have to do some calculations? In class we were given the standard reaction enthalpy of 2 moles of a substance, so we just divided that value by 2 to get the standard enthalpy of formation. I wouldn't be surprised if we had to do simple calculations like that)

[alexjung1A]

Yes, I believe Dr. Lavelle said that we will be given those values in that lecture.

[Mandy Mg 2J]

Hello! We should be given values for the standard enthalpies of formation (a lot of the examples and problems we have been doing require a table of such values). But, like one of the comments said above, we may have to perform simple calculations to ensure that we are using standard enthalpies of formation for 1 mol of products or reactants.

[Aanjaneyaa]

Yes, we will be given these values. As these values are already known, there is no need for us to memorize them.

[Thailer Phorn 1C]

Those values would be provided for us.