BIOL 111 Chapter Notes - Chapter Summary: Chemical Equation, Limiting Reagent, Bromine
Document Summary
Some chemical reactions show different characteristics to indicate that the change was chemical (chemical change a change in atomic or molecular arrangement) Remember which elements are diatomic: h2 n2 f2 o2 i2 cl2 br2. Molecules amounts, atom amounts, weight of elements/compounds used. Percent yield= (actual (given) yield/ calculated yield) x 100. Too much of one reactant, not enough of the other. You will be given amounts of two or more substances in a balanced equation and asked about the amount of a third or how much of one substance will be left over. Limiting reagent not enough of this one. Excess reagent left over of this one. Approaches to limiting problems: use each of the given substances to calculate the third (stoichiometry, use ricf table, this method is better if having to solve multiple aspects of the problem. Limiting reagent = sodium because produces less nacl, excess reagent= cl 2. Solute the thing in lesser amount.
