Different Changes in Enthalpy symbols -ΔH

Moderators: Chem_Mod, Chem_Admin

Joshua Hughes 1L
Posts: 81
Joined: Sat Jul 22, 2017 3:01 am
Been upvoted: 3 times

Different Changes in Enthalpy symbols -ΔH

Postby Joshua Hughes 1L » Sun Jan 28, 2018 3:05 pm

Can someone go over with me the different meanings of the different symbols, please. I think I know the one with the degree symbol in the corner and the enthalpy of formation ΔHf and ΔHfus and the like but there a few others I was kind of unfamiliar with:
ΔHc
ΔHL
ΔHb

SPandya1F
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am
Been upvoted: 1 time

Re: Different Changes in Enthalpy symbols -ΔH

Postby SPandya1F » Sun Jan 28, 2018 3:27 pm

ΔHc is the enthalpy of combustion.
ΔHL is the lattice enthalpy (ions).
ΔHb is bond enthalpy.

Anna Li 2E
Posts: 21
Joined: Sat Jul 22, 2017 3:00 am

Re: Different Changes in Enthalpy symbols -ΔH

Postby Anna Li 2E » Sun Jan 28, 2018 10:32 pm

ΔHc=enthalpy of combustion. This is when one mol of a compound is burned completely in oxygen.
ΔHL=lattice enthalpy of formation. An example of this would be how the gaseous form of Na+ and Cl- come together to create NaCl solid.
ΔHb=bond enthalpy which is the energy released when bonds are made.

Warda Sahib 2J
Posts: 29
Joined: Thu Jul 13, 2017 3:00 am

Re: Different Changes in Enthalpy symbols -ΔH

Postby Warda Sahib 2J » Sun Feb 04, 2018 10:02 pm

ΔHc-enthalpy of combustion; ΔHL-lattice enthalpy; ΔHb is bond enthalpy.


Return to “Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)”

Who is online

Users browsing this forum: No registered users and 2 guests