Introduction2

# Introduction2 - Introduction Stoichiometry is a method used...

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Introduction Stoichiometry is a method used in chemistry which involves reactants and products that are in a chemical reaction. This branch of chemistry uses ratios in which reactants combine and products form. A limiting reactant is the reactant in a chemical reaction that limits the amount of product that can be formed. In many cases, there are traces of excess proportions of one reactant and less of another reactant. The reaction will stop when all of the limiting reactant is consumed. An example of this is: CaCl 2 + 2 NaOH Ca(OH) 2 + 2NaCl Suppose we start the reaction with 3 moles of CaCl 2 and 3 moles of NaOH and solve for how many Ca(OH) 2 will form. Since we need 2 moles of NaOH for every 1 mole of CaCl 2 , the equations would look like this: 3.0 mol CaCl 2 x = 3.0 mol Ca(OH) 2 3.0 mol NaOH x = 1.5 mol Ca(OH) 2 1.5 mol of Ca(OH) 2 would be produced because NaOH would be the limiting reactant and would leave excess CaCl 2 . The maximum amount of product that we can make, in this case 1.5

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Introduction2 - Introduction Stoichiometry is a method used...

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