CHEM101 Lecture Notes - Lecture 15: Lewis Structure, Enthalpy, Formal Charge

• School: University of Alberta
• Department: Chemistry
• Course: CHEM101
• Professor: Yoram Apelblat

Document Summary

Online quiz and term exam: online lecture (2): lewis structures. Information on term exam 1 will be discussed in class on friday. Dh rxn = sdh reactant bonds broken+ sdh product bonds formed. Using bond energies to calculate dh rxn for hf formation. What makes a good fuel: ch4 + 2o2 co2 + 2h2o, 2ch3oh + 3o2 2co2 + 4h2o. A good fuel: one that has weak bonds: fuels with. ______________ bonds release more energy: for hydrocarbons, need to consider: Converting molecular formulas to molecular shapes: step 1: convert molecular formulas to lewis structures, by the end of section 10. 1, we should be able to convert co3. Converting a molecular formula into a lewis structure. 1 assig(cid:374) ea(cid:272)h ato(cid:373) the ele(cid:272)tro(cid:374)s that (cid:862)(cid:271)elo(cid:374)g to the(cid:373)(cid:863) lone pair electrons belong entirely to them bonding electrons belong half to them. # valence e in free atom assigned e in bonding atom.