Chem 115 1nd Edition Lecture 7Outline of Last LectureI. StoichiometryOutline of Current LectureI. Chemical ReactionII. Balancing ReactionIII. Stoichiometry in ReactionsCurrent LectureChemical Reaction: uses formulas to express identities and qualities of substances involved in a physical or chemical changeEx. H2 + F2 2HFBalancing Reactions1. Assume it’s not balanced2. Start with most complicated molecule3. Trial and error4. Progress through iterations5. Check for lowest common denominator 6. All atoms must be equal on both sidesEx. C8H18 + O2 CO2 + H2O 2C8H18 + 25O2 16CO2 + 18H2O 16 C = 16 C 36 H = 36 H 50 O = 50 OStoichiometry in Reactions- Coefficients in balanced chemical reactionThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.o Relative number of moles- More ratios from balanced equationEx. 2N2O5 4NO2 + O22 moles N2O5 1 mole O2- Mass on each side must be
View Full Document
Unlocking...