Theoretical Yield and Percent Yield Recipe says makes 3 dozen, you get 30. Your percent yield is 83.33%.

Slides:

Advertisements

Similar presentations

Limiting Reactant (aka limiting reagent)

Advertisements

Theoretical and Percent Yield

Limiting Reactants and Percent Yield

Chemical Quantities Chapter 9

HONORS CHEMISTRY Feb 27, Brain Teaser Cu + 2 AgNO 3  2 Ag + Cu(NO 3 ) 2 – How many moles of silver are produced when 25 grams of silver nitrate.

Mathematics of Chemical Equations By using “mole to mole” conversions and balanced equations, we can calculate the exact amounts of substances that will.

Chemistry 12.3 “Limiting Reagent and Percent Yield”

Laboratory 08 LIMITING REACTANT LAB.

Limiting Reactant + ? 2B + S ? +

Limiting Reactants and Percent Yields

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.

Limiting Reactants & Percent Yield

Limiting Reagents. If you are making tricycles, and you have 23 wheels, 20 handlebars, and 53 seats, how many tricycles can you make? 23 w (1 tricycle/

Limiting Reagents and Percent Yield

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 and Excess Reagents

12.3 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.

Identify the limiting reactant and calculate the mass of a product, given the reaction equation and reactant data. Include: theoretical yield, experimental.

Ch. 9: Calculations from Chemical Equations

Limiting Reactants Section 12.3.

Percentage Yield.

April 7, 2014 Today: Stoichiometry and % Yield. Percent Yield Remember, stoichiometry is used to tell you how much product you can form from X amount.

Stoichiometry Chapter 9. Step 1 Balance equations and calculate Formula Mass (FM) for each reactant and product. Example: Tin (II) fluoride, SnF 2, is.

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.

Percent Yield Section Percent Yield Often when reactions are actually carried out in the lab, there is a difference between the amount of product.

The substance that limits the amount of product that can be made

Chapter #9 Stoichiometry. Chapter 9.1 Composition stoichiometry deals with the mass relationships of elements in compounds. Reaction stoichiometry involves.

UNIT 6: STOICHIOMETRY PART 2: STOICHIOMETRY. KEY TERMS Actual yield - Amount of product was actually made in a reaction Dimensional analysis - The practice.

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

Limiting Reactions and Percent Yield Calculating by moles or mass ©2011 University of Illinois Board of Trustees

Theoretical yield: amounts of product calculated from the limiting reagent. Actual yield: amount produced during the conducted experiment. Percentage.

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

Limiting reagents In lab a reaction is rarely carried out with exactly the required amounts of each reactant. In lab a reaction is rarely carried out with.

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.

Limiting Reagent and Percent Yield Chapter 12.3 Page 368.

Do Now 1 Read the balanced equation below and write all possible mole ratios. 2Al 2 O 3 → 4Al(s) + 3O 2 (g)

Ch. 12 Stoichiometry 12.1 The Arithmetic of Equations.

Actual and Percent Yields So far when we have been talking about reactions we have been talking about 100% of the (limiting) reactant becoming a product.

Limiting Reactants Unit 7 1. Limiting Reactants 2.

12.3 Limiting Reagent and Percent Yield > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 12 Stoichiometry 12.1.

Ch. 9-3 Limiting Reactants & Percent Yield. POINT > Define limiting reactant POINT > Identify which reactant is limiting in a reaction POINT > Define.

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.

7/6/20161 Chap 9: Stoichiometry 7/6/20162 Section 9-1 Introduction to Stoichiometry Define stoichiometry. Describe the importance of the mole ratio in.

Daily Science pg. 82 You are doing the following reaction in the lab. You start with g of magnesium. How many grams of oxygen gas do you need? How.

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

Sec 12.3 limiting reactant, percent, actual and theoretical Yield

Chapter 9 STOICHIOMETRY

Stoichiometry Just Do It.

Chemical Reactions Unit

Theoretical Yield The maximum amount of product that can be produced from a given amount of reactant.

Limiting and Excess Reactants

Stoichiometry Vocab Theoretical Yield: the calculated amount of product yielded by a reaction (found through stoichiometry) Actual Yield: the actual amount.

Basic Chemistry Chapter 11 Gases Chapter 11 Lecture

Results Data Mass of iron nails before the reaction _________

Limiting Reagent and Percent Yield

Bellwork Tuesday 5.9 L of carbon dioxide is combined with 8.4 g MgO in a synthesis reaction to form magnesium carbonate. How many grams of magnesium carbonate.

Information Given by Chemical Equations

Limiting Reagent If you are given one dozen loaves of bread, a gallon of mustard and three pieces of salami, how many salami sandwiches can you make? The.

Reaction Stoichiometry

Presentation transcript:

Theoretical Yield and Percent Yield Recipe says makes 3 dozen, you get 30. Your percent yield is 83.33%.

Theoretical Yield The predicted amount of product is the theoretical yield. It is the amount of product expected based on the amounts of reactants available.

Theoretical Yield What is the theoretical yield of s’mores?

Calculating Theoretical Yield Theoretical Yield is calculated by using molar ratios of reactants to products. The limiting reagent will determine the theoretical yield.

Learning Check 10.0g of Al reacts with 35.0 grams of Cl 2 to produce AlCl 3. Which reactant is limiting, which is in excess, and how much product is produced? 2 Al + 3 Cl 2  2 AlCl 3

Learning Check Start with Al: Now Cl 2 : = mole AlCl 3 limiting reagent

Learning Check The predicted amount of product is the theoretical yield g of AlCl 3 is the calculated product, so that is the theoretical yield.

Percent Yield Percent yield is the percent of the theoretical yield that was made by our experiment. x (the amount you expect to get from the reaction)

Percent Yield The percent yield is always less than 100%. Why? Experimental error in measurements (masses), loss of product in handling, and imperfect ratios of reactants

Learning Check A student conducts a reaction that produces grams of copper (Cu). If the theoretical yield of Cu is grams (the amount of copper expected to be produced) what is the student's percent yield?

Percentage Yield percentage yield = x 100 percentage yield = %