• Support PF! Buy your school textbooks, materials and every day products Here!

Thermodynamics problem?

  • Thread starter Dell
  • Start date
  • #1
590
0
How do i solve this chem, thermodynamics problem?
find ΔHf for OH(g) if

H2O2 (g)--> 2OH(g)

ΔH(diss)=213KJ/mol

what is ΔH(diss)?? what is 'diss'

someone told me The ΔH(diss)=213KJ/mol is equal to twice the ΔHf of OH. but i doont know how they got to this, also it seems a bit too simple for a qestion if all i need to do is divide by 2,
so how would i solve this?
 

Answers and Replies

  • #2
40
0
Your [tex]\Delta H(diss)[/tex] is your enthalpy of reaction. Remember that the enthalpy of reaction equals: Enthalpy of formation of products - Enthalpy of formation of reactants. Replace your data (you will need to look for H2O2 enthalpy of formation on a table) there and solve for [tex]\Delta H(OH)[/tex].
 

Related Threads for: Thermodynamics problem?

  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
16
Views
741
  • Last Post
Replies
6
Views
3K
Replies
1
Views
3K
Replies
9
Views
1K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
1
Views
5K
Top