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Tuesday January 29, 2013

Tuesday January 29, 2013. ( Mole to Mole Stoichiometry ). Bell Ringer Tuesday, 1-29-13. In the following reaction, 5 moles of hydrogen gas will produce how many moles of water? H 2 + O 2 æ H 2 O. 2. 2. 5 moles. ? moles.

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Tuesday January 29, 2013

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  1. TuesdayJanuary 29, 2013 (Mole to Mole Stoichiometry)

  2. Bell RingerTuesday, 1-29-13 In the following reaction, 5 moles of hydrogen gas will produce how many moles of water? H2 + O2æ H2O 2 2 5 moles ? moles Hydrogen gas and water are in a 2:2 or 1:1 mole ratio, therefore 5 moles of hydrogen gas will produce 5 moles of water.

  3. Announcements Happy Day!

  4. Announcements I will be available after school today until 5:00.

  5. Types of Stoichiometry Problems Mole – Mole Conversions: The given and unknown quantities are both amounts in moles. When you are given the amount of a substance in moles and asked to calculate the amount in moles of another substance in the chemical reaction, the general plan is:

  6. Mole – Mole Conversions Example: 13 moles of aluminum oxide will produce how many moles of aluminum? 2Al2O3→4Al + 3O2 Mole ratio of Al2O3 to Al: 2:4 1:2 13 mol Al2O3→26 mol Al

  7. Mole - Mole Stoichiometry Mole - mole stoichiometry enables you calculate the number of moles of a substance that is a reactant or a product in a reaction if you know the number of moles of another substance in the same reaction.

  8. Mole - Mole Stoichiometry Sample Problem Magnesium metal reacts with oxygen gas to produce magnesium oxide. If 5 moles of magnesium metal react, how many moles of magnesium oxide will be produced? First, write the balanced chemical equation. Mg + O2æMgO Using the formula for mole – mole conversions, the calculation would look like this: 2 2 mol MgO 5 mol Mg 2 X = 5 molMgO 1 mol Mg 2

  9. Mole - Mole Stoichiometry Sample Problem In the space shuttle, the carbon dioxide exhaled by astronauts has to be removed to prevent the crew from suffocating. Carbon dioxide can be removed by its reaction with lithium hydroxide to produce lithium carbonate and water, which are not harmful to the astronauts. Write the balanced chemical equation for the reaction, then determine how many moles of lithium hydroxide are required to react with 20 mol of carbon dioxide, the average amount exhaled by each crew member each day? CO2 + LiOHæLi2CO3 + H2O 2 20 mol ? mol

  10. Mole - Mole Stoichiometry Sample Problem CO2 + LiOHæLi2CO3 + H2O 2 20 mol ? mol molLiOH 20 mol CO2 2 = molLiOH 40 X 1 1 mol CO2

  11. Worksheet Mole to Mole Stoichiometry

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