ch231hchapter4

Chapter 4 Learning Goals

1. You can describe how to determine that a chemical reaction has occurred.
2. Given correct chemical formulas for reactants and products, you can provide a balanced chemical equation for a reaction.
3. You recognize that not all chemical reactions proceed exclusively from a single set of reactants to a single set of products:  there may be competing (simultaneous) reactions to give different products; reactions may proceed partially; they may establish an equilibrium mixture.  You can describe the observable outcomes from any of these situations.
4. Given a balanced chemical equation, you can identify the limitng reagent, given quantities of each reactant used.
5. From the quantity of limiting reagent, you can calculate the theoretical yield (in mass units), express the actual yield if given isolated masses of products, and calulate the per cent yield.
6. You understand that reactions may be limited by the rate of intermixing of reactants, and that therefore reactions are often conducted in solution. 
7. You can describe ideal properties for a solvent.
8. You understand the definition of molarity as a unit of concentration, and can use it effectively to measure 

Links:

Luminol reaction

Thermite reaction

NaI + HgCl₂

Ca + HCl

Hydrogen balloons

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