Unit: Chemical Reactions Day 6 - Notes Unit: Chemical Reactions Types of Chemical Reactions: Double Replacement and Combustion Upper left: Thermite reaction, Fe2O3 + Al => 2Fe +2Al2O3 + HEAT!!! http://en.wikipedia.org/wiki/Thermite Upper right: potassium in water, K + H2O => KOH + H2 + HEAT Bottom right: potassium chlorate and sugar, C12H22O11 + 8KClO3 => 12CO2 + 11H2O + 8KCl + HEAT!!! http://lecturedemos.chem.umass.edu/chemReactions5_5.html Bottom left: magnesium reacting with oxygen, Mg + O2 => MgO
After today you will be able to… Identify a double replacement and combustion reaction Predict the products in words for single replacement reactions Predict the products in formulas for a combustion reaction Balance combustion reactions heat Pt
Compound + Compound Compound +Compound Predicting Products Double Replacement/Displacement: Two ionic compounds react to form two new compounds by exchange of ions Common form: All double replacement reactions produce either water, a precipitate or a gas Compound + Compound Compound +Compound AB + CD AD + CB heat Pt
Examples of double replacements: copper (I) + beryllium sulfate oxalate copper (I) + beryllium oxalate sulfate Do not use the activity series for these reactions! heat Pt
Examples of double replacements: A neutralization reaction is a type of double replacement reaction. Neutralization reaction: Is a reaction between an acid and a base (base – a metal hydroxide, ex: NaOH). The product is metal salt and water always heat Pt
Example of a neutralization: aluminum nitric hydroxide + acid hydrogen nitrate aluminum + water nitrate Water will always be a product! heat Pt