balancing chemical reactions
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Balancing Chemical Reactions. Balancing Chemical Reactions. Balancing Chemical Reactions Sodium metal plus water Na (s) + H 2 O (l) → NaOH + H 2 (g) Burning Magnesium metal in air Mg (s) + O 2 (g) → MgO (s) & – Al + O 2 → Al 2 O 3 Burning Candle wax - PowerPoint PPT PresentationTRANSCRIPT
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Balancing Chemical Reactions
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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)
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Balancing Chemical Reactions
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Balancing Chemical Reactions
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Balancing Chemical Reactions
More Hydrogen atoms on the right than on the left.The only place to get more Hydrogen is from H2O
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Balancing Chemical Reactions
Now you have more Oxygen on the left than on the right.Multiply the NaOH by 2
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Balancing Chemical Reactions
Now Hydrogen and Oxygen are balanced but Sodium is not.Multiply the Na on the left by 2
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Chemical Reactions
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Balancing Chemical Reactions
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Balancing Chemical Reactions
Note one oxygen on the right and two on the leftMultiply the left by 2
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Balancing Chemical Reactions
After multiplying we see that oxygen is balanced but Now magnesium is not, Multiply Mg by 2.
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Balancing Chemical Reactions
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Balancing Chemical Reactions
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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.
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Balancing Chemical Reactions
After doing the multiplication only Al is left unbalancedMultiply Al by 4 to finish.
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Balancing Chemical Reactions
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Balancing Chemical Reactions
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Balancing Chemical Reactions
Odd number of Oxygen on the right and even on the left.Multiply the hydrocarbon on the left by 2.
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Balancing Chemical Reactions
80 Carbons make 80 CO2164 Hydrogen's make 82 waters.
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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.
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Balancing Chemical Reactions