Chemical Equations III

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Presentation transcript:

Chemical Equations III Combustion Reactions

Step to Balancing Combustion equations You may have to make some changes but you have to start somewhere. Balance in this order with some exceptions Carbon Hydrogen oxygen

Equation 1 Carbon ___ C5H10O +__ O2 ----- > 5 CO2 +___ H2O Hydrogen Oxygen (total on product side) ___ C5H10O +_7_ O2 ----- >_5__ CO2 +_5_ H2O ___ C5H10O +_7_ O2 ----- >_5_ CO2 +_5 H2O

Equation 2 ___C6H6 +__ O2 ----- >___ CO2 +___ H2O Carbon Hydrogen ___C6H6 +__ O2 ----- >__6_ CO2 + 3 H2O Oxygen ( start on product side) ___C6H6 +_15/2_ O2 ----- >_6__ CO2 +_3__ H2O Don’t want 15/2 O2. Multiply equation by “2” __2_C6H6 +_15_ O2 ----- >_12_ CO2 +_6 H2O

Equation III ___CH3NH2 +__ O2 ----- >___ CO2 +___ H2O + __N2 1. Nitrogen (exception) _2__CH3NH2 +__ O2 ----- >___ CO2 +___ H2O + __N2 2. Carbon __2_CH3NH2 +__ O2 ----- >__2_ CO2 +___ H2O + __N2 3. Hydrogen _2__CH3NH2 +__ O2 ----- >__2_ CO2 + _5_ H2O + __N2 4. Oxygen _2__CH3NH2 + _9/2_ O2 ----- >_2__ CO2 + _5__ H2O + __N2 multiply equation by “2” Answer _4__CH3NH2 + _9_ O2 ----- >_4__ CO2 +__10_ H2O + _ 2_ N2

Put answers in your Classwork/Homework Notebook C4H10 + O2 ----- > CO2 + H2O C6H12O6 + O2 ------- > CO2 + H2O C5H6O + O2 ---- > CO2 + H2O C7H6O2S + O2 ----- > CO2 + H2O C2H5 OH + O2 ----- > CO2 + H2O