Use average bond enthalpies (linked above) to calculate the enthalpy change for the following gas-phase reaction. 2HCl(g) + Br2(g) 2HBr(g) + Cl2(g)
To analyze the reaction, first draw Lewis structures for all reactant and product molecules.
Draw the reaction using separate sketchers for each species.
Separate multiple reactants and/or products using the + sign from the drop-down arrow.
Separate reactants from products using the â symbol from the drop-down menu.
Remember to include nonbonding valence electrons in your Lewis structures.
ÎHreaction = kJ

Match the vocabulary terms to their definitions. 1 . a long, chain-like set of molecules made up of repeating units joined end to end polymer 2 . a hard, brittle, heat- and corrosion-resistant material made by subjecting a nonmetallic mineral mixture to intense heat ceramic 3 . a plastic with low elongations that cannot be recycled thermoset 4 . a carbon fiber embedded in a polymer resin matrix thermoplastic 5 . a plastic with high elongations that can be recycled crystal 6 . a solid form resulting from the arrangement of atoms, ions, or molecules in definite geometric patterns composite