Reaction Stoichiometry. Objectives Understand the concept of stoichiometry. Be able to make mass-to-mass stoichiometric calculations.

Slides:

Advertisements

Similar presentations

Stoichiometry Ratios The stoichiometric coefficients in a balanced chemical reaction can be used to determine the mole relationships between any combination.

Advertisements

Chem 1A Chapter 3 Lecture Outlines

Stoichiometry Chapter 12.

#29 When 84.8 g of iron (III) oxide reacts with excess of carbon

Chapter 9 Combining Reactions and Mole Calculations.

Stoichiometry Introduction.

Stoichiometry Chemistry Ms. Piela.

Limiting Reactants and Excess

Section 9.1 Using Chemical Equations 1.To understand the information given in a balanced equation 2.To use a balanced equation to determine relationships.

Starter S moles NaC 2 H 3 O 2 are used in a reaction. How many grams is that?

Limiting Reactant and Percent Yield Limiting Reagent u If you are given one dozen loaves of bread, a gallon of mustard and three pieces of salami, how.

Greek for “measuring elements” The calculations of quantities in chemical reactions based on a balanced equation.

Stoichiometry – “Fun With Ratios”

Limiting Reagent and Percent Yield

Limiting Reagent u The limiting reagent is the reactant you run out of first. u The excess reagent is the one you have left over. u The limiting reagent.

Lecture 129/28/05 So what have you learned in the last few days?

12.3 Limiting Reagent and Percent Yield

Brought to you by Coach Cox PERCENT YIELD. WHAT IS PERCENT YIELD? Theoretical Yield – the maximum amount of product that can be produced from a given.

Ch. 9: Calculations from Chemical Equations

and cooking with chemicals

Stoichiopardy Holy Moley Do the 2 or 3 step Random Limit my Percent Q $100 Q $200 Q $300 Q $400 Q $500 Q $100 Q $200 Q $300 Q $400 Q $500 Final Chempardy.

Unit 8~ Stoichiometry Most of your notebooks are NOT graded. Please make sure to leave them in the same stack (NEATLY) after taking notes for me to grade!

Stoichiometry Chapters 7 and 9.

Stoichiometry! is the calculation of relative quantities of reactants and products in chemical reactions. SOURCE: Hands on Chemistry Activities…Herr Stoichiometry.

Chapter 12 Review “Stoichiometry”

Stoichiometry – “Fun With Ratios” Main Idea: The coefficients from the balanced equation tell the ratios between reactants and products. This ratio applies.

Stoichiometric Calculations Stoichiometry – Ch. 9.

Stoichiometry. Information Given by the Chemical Equation  The coefficients in the balanced chemical equation show the molecules and mole ratio of the.

Starter S moles of Iron (III) Hydroxide are used in a reaction. How many grams is that?

Stoichiometry The study of quantities of materials consumed and produced in chemical reactions.

Quantities in Chemical Reactions. the amount of every substance used and made in a chemical reaction is related to the amounts of all the other substances.

Chemical Calculations Stoichiometry OBJECTIVES: – Calculate stoichiometric quantities from balanced chemical equations using units of moles and mass.

Chemical Calculations Stoichiometry u OBJECTIVES: Calculate stoichiometric quantities from balanced chemical equations using units of moles, mass, representative.

Calculate the mass of Cu produced? Mass of beaker and Cu – mass of beaker.

Unit 8 Review Stoichiometry Complete on Markerboard or in your notes.

Chapter 12 Stoichiometry. Composition Stoichiometry – mass relationships of elements in compounds Reaction Stoichiometry – mass relationships between.

Stoichiometry Section 1 – Introduction to Stoichiometry, and Quantitative Relationships of Chemical Formulas Section 2 – Mathematics of Chemical Equations.

Stoichiometry Interpreting Balanced Equations

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.

Limiting Reactants and Excess What is the Limiting Reagent (Reactant)? It is the substance in a chemical reaction that runs out first. The limiting reactant.

Chapter 12: Stoichiometry

Limiting Reagents and Percent Yield Limiting Reagent If you are given one dozen loaves of bread, a gallon of mustard and three pieces of salami, how.

Limiting Reactants Unit 7 1. Limiting Reactants 2.

Percentage Yield.

Stoichiometry Notes (Chapter 12). Review of Molar Mass Recall that the molar mass of a compound is the mass, in grams, of one mole of that compound.

Limiting Reactants, Theoretical Yield, and % Yield.

Stoichiometry Predicting amounts of reagents needed or amounts of products made.

Chapter 9 Stoichiometry Test REVIEW SHEET

TOPIC 17: INTRO TO STOICHIOMETRY EQ: EQ: How does a balanced chemical equation help you predict the number of moles and masses of reactants and products?

Chemistry Chapter 9 - Stoichiometry South Lake High School Ms. Sanders.

Section 9.1 Using Chemical Equations Steven S. Zumdahl Susan A. Zumdahl Donald J. DeCoste Gretchen M. Adams University of Illinois at Urbana-Champaign.

Unit 8 Review Stoichiometry. 1. Describe how a chemist uses stoichiometry? To determine the amount of reactants needed or products formed based on the.

Stoichiometry Chapter 12. Chocolate Chip Cookies!! 1 cup butter ;1/2 cup white sugar 1 cup packed brown sugar 1 teaspoon vanilla extract 2 eggs ; 2 1/2.

Unit 6: Limiting Reactants and Percent Yield Chapter 11.3 and 11.4.

Let’s talk… mole to mole

Stoichiometry Introduction.

Chapter 9 Chemical Quantities.

Stoichiometry: Chapter 9.

Chemical Reactions Unit

Ch. 9: Calculations from Chemical Equations

Chapter 12 CHEMICAL STOICHIOMETRY

Chapter 9 “Stoichiometry”

Information Given by Chemical Equations

Notes Ch Limiting Reagent and Percent Yield

Reaction Stoichiometry

Presentation transcript:

Reaction Stoichiometry

Objectives Understand the concept of stoichiometry. Be able to make mass-to-mass stoichiometric calculations.

Stoichiometry stoichiometry: the process of calculating quantities involved in chemical reactions balanced chemical equations are required coefficients can represent the number of particles or the number of moles N 2 (g) + 3H 2 (g) → 2NH 3 (g) 1 mole 3 moles 2 moles mole ratio: ratio of moles involved in a reaction (using coefficients)

Stoichiometry Problem N 2 (g) + 3H 2 (g) → 2NH 3 (g) If 25.7 g of nitrogen gas completely reacts with an excess of hydrogen gas, what mass of ammonia is produced? # g N 2 → # mol N 2 → # mol NH 3 → #g NH 3 g A → mol A → mol B → g B A B A = what you know B = what you want This “pathway” is used in most stoichiometry problems

Stoichiometry Problem The process of smelting iron ore to iron can be carried out with the following reaction. How much ferric oxide is needed to produce 75.8 g of iron using this method? Fe 2 O 3 (s) + 3 CO(g) → 2 Fe(s) + 3 CO 2 (g)

Stoichiometry Problem A copper penny combines with oxygen in a crucible to form cuprous oxide. Write a balanced chemical equation for the reaction. What mass of oxygen is needed to completely react with a 3.12 g copper penny?

Objectives Understand the distinction between actual yield and theoretical yield. Be able to determine the percentage yield for a chemical reaction.

Percentage Yield theoretical yield: the maximum amount of product that can be produced (calculated using stoichiometry) actual yield: the actual amount of product produced in a chemical reaction The percent yield cannot exceed 100%

Percentage Yield Problem What is the percentage yield if 4.65 g of copper is produced when 1.87 g of aluminum reacts with excess cupric sulfate? 2 Al (s) + 3 CuSO 4 (aq) → Al 2 (SO 4 ) 3 (aq) + 3 Cu (s)

Objective You will be able to determine the limiting reagent (or reactant) for a chemical reaction when given the mass of two (or more) reactants.

Limiting Reagent limiting reagent: the reactant that is completely consumed first in a reaction (so it limits the amount of product) The reactant that yields the least product is the limiting reagent. Which substance is the limiting reagent if 3.50 g of sulfur reacts with 2.50 g of aluminum to produce Al 2 S 3 ? How much Al 2 S 3 is actually produced?