Heat of Reaction ( ΔH )

Question 1

Enthalpy (H)

Answer 1

total energy of a system, the sum of all the potential and kinetics energies that the system contains at STP (what u put in + what comes out)

Question 2

Enthalpy change (ΔH)

Answer 2

Energy change in a system during a reaction

Question 3

ΔH formation

Answer 3

1 mole of substance formed from its elements in natural state

Question 4

How to solve for ΔH using Bond E

Answer 4

ΔH= BEr - BEp

Question 5

what is ΔH made of

Answer 5

Q sub / moles or g of sub

Question 6

ΔH 4 step problems

Answer 6

1) Q water
2) Qsub = - Qwater
3) n sub (moles)
4) ΔH

Question 7

ΔH different names

Answer 7

Molar enthalpy, change in enthalpy, molar heat of reaction

Question 8

value for heat of formation of an ele

Answer 8

0

Question 9

Hess’ Law fast way

Answer 9

ΔH= ΣΔHfproducts - ΣΔHfreactants
can only use if given ΔH of each compound

Question 10

Benchtop Equation

Answer 10

Where you want to get to (Original BCE that we want ΔH for)

Question 11

Hess’ Law Slow way

Answer 11

1) Switch around reactions to have P and R on the same as benchtop equation
2) Flid sign of any ΔHs that have been switched
3) Cross out anything that is the same on R and P sides
4) Add up reactions ΔH for ΔH of benchtop equation