stoichiometry warmup i have 1 mole of co 2 gas at stp. how many grams of co 2 do i have? how many...
DESCRIPTION
Stoichiometry If you know the moles of a substance, the balanced equation allows you to determine the moles of all other substances in the rxnTRANSCRIPT
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Stoichiometry Warmup
• I have 1 mole of CO2 gas at STP.
• How many grams of CO2 do I have?
• How many Liters of CO2 do I have?
• How many molecules of CO2 do I have?
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Stoichiometry
• The relationship between reactants and products in a balanced chemical equation
• Mole Ratios
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Stoichiometry
• If you know the moles of a substance, the balanced equation allows you to determine the moles of all other substances in the rxn
![Page 4: Stoichiometry Warmup I have 1 mole of CO 2 gas at STP. How many grams of CO 2 do I have? How many Liters of CO 2 do I have? How many molecules of CO 2](https://reader035.vdocuments.us/reader035/viewer/2022062600/5a4d1b4f7f8b9ab0599a6c86/html5/thumbnails/4.jpg)
Stoichiometry
• Coefficients from balanced equations can be used to write conversion factors called mole ratios
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Stoichiometry
• Write a balanced equation for the following rxn:
• Hydrogen + nitrogen ammonia
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Stoichiometry
• How many moles of ammonia are produced when 0.60 mol of nitrogen reacts with hydrogen?
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Stoichiometry
• How many moles of hydrogen gas are needed to react with 0.60 mol of nitrogen gas?
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Stoichiometry
• How many grams of ammonia are produced by the reaction of 5.40g of hydrogen with excess nitrogen?
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Stoichiometry
• How many grams of nitrogen are needed to react with 5.40g of hydrogen?
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Stoichiometry
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Stoichiometry
• How many molecules of oxygen are produced when 29.2g of water are decomposed?
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Limiting vs. Excess Reagents
• Limiting Reagent =The reactant that determines the amount of product formed in a rxn.
• Completely consumed in the rxn.
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Limiting vs. Excess Reagents
• Excess Reagent = the reactant that is not completely used up
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Limiting vs. Excess Reagents
• If you have 6.70 mole of Na and 3.20 mol Cl2, which is the LR?
• How many moles of NaCl is produced?
• How many moles of ER remain?
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Limiting vs. Excess Reagents
• What is the limiting reagent when 80.0g Cu reacts with 25.0g S?
• What is the maximum amount of Cu2S in grams that can be formed?
• How many grams of ER remain?
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LR video
• http://education-portal.com/academy/lesson/limiting-reactants-calculating-excess-reactants.html#lesson
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Yield Video
• http://education-portal.com/academy/lesson/calculating-reaction-yield-and-percentage-yield-from-a-limiting-reactant.html#lesson
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Theoretical Yield
• Theoretical Yield = maximum amount of product that can be formed from given amounts of reactants
• (based on calculation from the LR)
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Actual Yield
• Actual Yield = the amount of product formed when the rxn is carried out in the lab
• Based on experimentation
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Percent Yield
• Percent Yield = • actual yield / theoretical yield• x 100
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Percent Yield
• What is the percent yield of CaO when 24.8g of CaCO3 is heated and 13.1g CaO is produced in the lab?
• CaCO3 CaO + CO2
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Stoichiometry Review
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What is the LR?
• 4 moles of oxygen gas react with 16 moles of H2 gas.What is the LR?
• What is the theoretical yield of product?
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What is the percent yield?
• The burning of 18.0g of carbon in oxygen produces 55.0g of carbon dioxide.
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Review Question
• Write a balanced equation for the reaction that occurs when Magnesium metal reacts with Hydrochloric acid.
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Review Question
• If 10.0g of Magnesium is mixed with 35.0g of Hydrochloric acid, what is the LR?
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Review Question
• What is the theoretical yield of magnesium chloride?
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Review Question
• What is the percent yield of Magnesium chloride if 35.0g is produced in the lab?
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Review Question
• How much excess reagent remains?