Calculating enthalpy of formation using combustion data

Tutorials of selected topics of IBH chemistry.

[Jumbjetsky]

I do not know wether I lack knowledge, or the professors have a really hard time explaining this. I have been discussing with my professors about this and they cannot give a simple explanation. Lack of ability to explain something in a simple way is lack of understanding.

[kkhan]

Chemistry can be tricky which i hate and also very annoying and stressful. But this is the stuff i like more which i get after a relatively less stressing - those who wanna know you can also just think of it as working out the enthalpy change of the reaction from constituent elements to compound using the enthalpy change of combustion of those reactants and elements, then you just gotta add the combustion enthalpies of reactants and minus it from the combustion enthalpy of products giving you delta H of r, this is equal to the delta fformenthalpy of the formation of the reaction. Thats it. Manipulation of algebra with elements using hess law this is amazing right?

[shafquatparveen]

Thank you so much sir
I always had a doubt in this type of questions. Now I am very clear with this concept ☺️

[kamsiegwim]

how would you find the combustion enthalpy from formation data?

[majdt]

I swear both arrows in the enthalpy change of formation face upwards

[nicoleng]

How to find combustion enthalpy from formation data ?

[parthanand]

Decent example, illustrated the concept very well. Thank you good Sir.

[yasaminroozegar]

Hi rostam, great video very helpful, but im confused I thought the equation for formation was product - reactant?