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Balancing Chemical Reactions
Balancing Chemical Reactions
Balancing Chemical Reactions
• Balancing Chemical Reactions• Sodium metal plus water
– Na (s) + H2O (l) → NaOH + H2 (g)
• Burning Magnesium metal in air– Mg (s) + O2 (g) → MgO (s) & – Al + O2 → Al2O3
• Burning Candle wax– C40H82 (s) + O2 (g) → CO2 (g) +H2O (g)
Balancing Chemical Reactions
Balancing Chemical Reactions
Balancing Chemical Reactions
More Hydrogen atoms on the right than on the left.The only place to get more Hydrogen is from H2O
Balancing Chemical Reactions
Now you have more Oxygen on the left than on the right.Multiply the NaOH by 2
Balancing Chemical Reactions
Now Hydrogen and Oxygen are balanced but Sodium is not.Multiply the Na on the left by 2
Chemical Reactions
Balancing Chemical Reactions
Balancing Chemical Reactions
Note one oxygen on the right and two on the leftMultiply the left by 2
Balancing Chemical Reactions
After multiplying we see that oxygen is balanced but Now magnesium is not, Multiply Mg by 2.
Balancing Chemical Reactions
Balancing Chemical Reactions
Balancing Chemical Reactions
Note there are 3 Oxygen on the right and 2 on the left.The simplest factor for 3 and 2 is 6 so 6 divided by 3 is2 so multiply Al2O3 by 2 and 6 divided by 2 is 3 so multiplyO2 by 3.
Balancing Chemical Reactions
After doing the multiplication only Al is left unbalancedMultiply Al by 4 to finish.
Balancing Chemical Reactions
Balancing Chemical Reactions
Balancing Chemical Reactions
Odd number of Oxygen on the right and even on the left.Multiply the hydrocarbon on the left by 2.
Balancing Chemical Reactions
80 Carbons make 80 CO2164 Hydrogen's make 82 waters.
Balancing Chemical Reactions
After multiplying out the reactants you end up with 242 Oxygen'son the right that you can get from 121 Oxygen molecules on the left.
Balancing Chemical Reactions
