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Chemical Rxns-Limiting Reagents & Types of Rxns

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Presentation on theme: "Chemical Rxns-Limiting Reagents & Types of Rxns"— Presentation transcript:

1 Chemical Rxns-Limiting Reagents & Types of Rxns
Today you will learn: How much a rxn produces The 5 types of reactions

2 Imagine…(don’t write this!)
If you bought a kit to build a car, what happens if you don’t have enough bolts and screws? If you build a bookcase out of wood, what do you do with the extra pieces?

3 I. How much does a reaction produce?
A. During a chemical reaction, the completeness of the reaction is dependant on the amount of the reactants and the product lost in the process.

4 Chemical Reactions Many times, there is an excess amount of one of the reactants and the other reactant is completely used up.

5 Chemical Reactions (cont)
The limiting reagent is the substance that is used up first.

6 II. Types of Chemical Reactions
Combustion- where an organic compound (CxHyOz) react with O2 to form oxide compounds. C2H5OH + O2  CO2 + H2O + Energy 1. Highly exothermic: light, sound, heat is produced.

7 Types of Reactions Synthesis-Simple substances form into complex substances. CO2 + H2O  C6H12O6 + O2 simple complex

8 Types of Reactions C. Decomposition-A compound is broken down into simpler substances. CH3OH  CO + H2 complex simple

9 Types of Reactions D. Single Displacement- One atom leaves a compound to join with another atom to form a compound. K + HCl  KCl + H2

10 Types of Reactions Double Replacement-Both compounds break apart to become two new compounds. KCl + Na(OH)  NaCl + K(OH)


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