Enthalpy - Page 15

Questions
  • How do you calculate enthalpy change of combustion?
  • How do you calculate enthalpy change?
  • What does #sf(DeltaH)# mean when applied to a chemical reaction ?
  • What is the enthalpy of combustion of ethylene?
  • Thermochemistry help: What is the difference between.... ? Please clarify and explain.
  • Given the thermochemical equation Al2O3(s) → 2Al(s) + (3/2)O2(g) ∆Hº = 1676 kJ/mol what is ∆Hº for the reaction? 4Al(s) + 3O2(g) → 2Al2O3(s)
  • The standard enthalpies of formation, ΔH∘fΔHf∘, for C2H2(g), O2(g), CO(g), H2O(g), and CO2(g) are given in the table. Use this information to calculate the overall heat of the reaction that converts 1 mole of C2H2(g) and a stoichiometric amount of O2(g).?
  • For Enthalpy? the formula and what answer you all got? The sum(product)-The sum(reactant)
  • How do we find the enthalpy associated with the reaction....?
  • What is the enthalpy of reaction at #"373 K"# if the heat capacities are the same at #"273 K"# and we know #DeltaH_(rxn)# at #"273 K"#?
  • Which energy change corresponds to the enthalpy change of atomization of #H_2# at 298 K ?
  • Given the thermochemical equations: #i.# #PrarrR# #;DeltaH=X# #ii.# #RrarrS# #;DeltaH=Y# #iii.# #1/2SrarrQ# #;DeltaH=Z# How do we assess the reaction....#Prarr2Q# #DeltaH_"rxn"^@=??#
  • Given ∆H° for the following reactions:H2(g)+O2(g)➡️2H2O(l):Cu(s)+1/2 O2(g)➡️CuO(s)_What further data is needed, if any,for calculation of ∆H° for the following reactions? CuO(s)+H2(g)➡️Cu(s)+H20(g)
  • What is the enthalpy of combustion for #"CH"_4(g) + 2"O"_2(g) -> "CO"_2(g) + 2"H"_2"O"(g)#?
  • Can someone please explain this diagram to me? How do we know that the arrows are supposed to point upwards and not downwards? Why is O2 and C's arrow pointing to the pointing to the products side?