Stoichiometry. What Is It? Branch of chemistry that shows the relationships among reactants and...
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Transcript of Stoichiometry. What Is It? Branch of chemistry that shows the relationships among reactants and...
Stoichiometry
What Is It?
Branch of chemistry that shows the relationships among reactants and products in a chemical reactionEquations must be balanced correctly
Mole Ratio
Conversion factor that relates the number of moles of any two substances
2 Al2O3 4Al + 3O2
Mole to Mole Problems
2 Al2O3 4Al + 3O2
How many moles of Al are produced by decomposing 2.5 moles of Al2O3 decomposing?
If .500 moles of Al is produced by this reaction, how many moles of O2 are produced?
If 28.5 moles of O2 was formed, how many moles of Al2O3 did you start with?
Mole to Mass Problems
Two steps 2H2 + O2 2H2OHow many grams of water are produced from 6.5 moles oxygen? 6CO2 + 6H2O C6H12O6 + 6O2
How many grams of sugar are produced when 3.0 moles of carbon dioxide reacts?How many grams of water are needed to react with 3.0 mole of carbon dioxide?
Mass to Mole Problems
Two steps H2 + Cl2 2HClHow many moles of HCL are produced from 12.5 g of hydrogen gas? 2Na + Cl2 2NaClHow many moles of NaCl will be produced from 100 g of chlorine gas?How many moles of Na will be needed to combine with 12.0 g of chlorine gas?
Mass to Mass Problems
Three steps 2 Al2O3 4Al + 3O2
How many grams of oxygen gas are produced from 58.6 g of aluminum oxide decomposing?If 12.5g of Al was produced in a decomposition, how many grams of oxygen gas was produced?