Limiting Reactants & Percent Yield. Definitions  Limiting Reactant - completely consumed in the reaction and determines the amount of product formed.

Slides:

Advertisements

Similar presentations

Performing Calculations involving Limiting and Excess Reagents.

Advertisements

Limiting Reactant 1 frame and 3 wheels are needed to create one tricycle If I have 10 frames and 12 wheels, how many tricycles can I make? 4 I have excess.

Stoichiometry, Limiting Reactants and Percent Yield

Stoichiometry Introduction.

Limiting Reactant Percent Yield. Consider the following reaction 2 H 2 + O 2  2 H 2 O.

Chapter 9 Chemical Quantities. 9 | 2 Information Given by the Chemical Equation Balanced equations show the relationship between the relative numbers.

Section “Limiting” Reagent

Percent Yield and Limiting Reactants

Determining the Mole Ratio in a Chemical Reaction Chemistry 117

Limiting Reactants and Percent Yields

Limiting Reactants and Excess

Limiting Reactants & Percent Yield

Who can propel a rocket the farthest? The best scientist will win!

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.

Chapter 9 – Review Stoichiometry

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.

2Al + 3Br 2  2Al Br g 46.0g ?g 1.How much aluminum bromide can be formed from aluminum? 2.How much aluminum bromide can be formed from bromine?

Ch. 9: Calculations from Chemical Equations

11-3 Limiting Reactants Reactions to this point have had one ingredient in excess. When you are given two or both reactant amounts, you have a limiting.

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 and the Math of Equations Part 4: Percent Yield 1.

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

Objectives To understand the concept of limiting reactants

Stoichiometry Calculations Limiting Reactants and Percent Yield Granada Hills Charter High School Student Review and Exam Preparation.

Limiting Reactants and Percent Yield

Chapter 9 – STOICHIOMETRY The MATH of a CHEMICAL REACTION.

Limiting Reactant II and Percent Yield A.K.A. Stoichiometry.

Limiting Reactants and Percent Yield Definitions The Limiting Reactant is the reactant that limits the amounts of the other reactants that can combine.

Chapter 9 Chemical Quantities. Copyright © Houghton Mifflin Company. All rights reserved. 9 | 2 Information Given by the Chemical Equation Balanced equations.

The Concept of: A little different type of yield than you had in Driver’s Education class.

Chapter 12 Stoichiometry. 1. The part of chemistry that deals with the amount of substances involved in chemical reactions A. 3 basic steps to every stoichiometry.

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.

Chapter 9, section 3, part 2 Percent Yield. Why percent yield?  Usually, not all the product possible is actually formed.  theoretical yield  maximum.

Limiting Reagent and Percent Yield Chapter 12.3 Page 368.

Percent Yield. Definitions The theoretical yield is the maximum amount of product that could be made from the reactants. The actual yield is the amount.

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

Limiting Reactants Unit 7 1. Limiting Reactants 2.

Reaction Yield. Theoretical vs Actual Yield Theoretical yield is the maximum amount of product that can be produced from a given amount of reactant Calculated.

% Yield. % yield = actual yield _ x 100 theoretical yield Actual yield is found in a lab or you must be given this value Theoretical yield is amount of.

Percent Yield How efficient is a chemical reaction?

Limiting Reactants, Theoretical Yield, and % Yield.

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

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

WARM UP The reaction of iron ore with carbon follows the equation: 2 Fe 2 O C  4 Fe + 3 CO 2. How many moles of Fe can be produced from 37 moles.

LIMITING REACTIONS INB PAGE 43. ESSENTIAL QUESTION: Why is the limiting reactant not always the reactant with fewer moles?

Stoichiometry Chemistry – Chapter 12.

DO NOW!!! Back of Worksheet!

Stoichiometry Chemistry – Chapter 12.

Stoichiometry and the Mole

Chemistry Limiting Reactions.

Limiting Reactants and Percent Yield

How much can I make? Maximizing Chemical Quantities

Combustion Analysis A g sample composed of C, H, N is burned to produce g CO2 and g H2O Assume all C in the sample is converted to CO2.

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

WARM UP 4 Li + O2  2 Li2O If you have 804 g of Li available for the reaction, calculate the amount of O2 you will need to pump into the reaction to ensure.

Theoretical Yield.

Stoichiometry Comes from the Greek words stoicheion, meaning “element,” and metron, meaning “measure.”

Limiting Reactant & Percent Yield

Ch. 9 Stoichiometry Stoichiometry is a branch of chemistry that deals with the mass relationships of elements in compounds and the mass relationships between.

Reaction Yield.

Limiting Reactants.

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.

Bell Work: Limiting Reactant Problems

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.

Limiting Reactants.

Presentation transcript:

Limiting Reactants & Percent Yield

Definitions  Limiting Reactant - completely consumed in the reaction and determines the amount of product formed  Excess Reactant - some amount remains left over at the end of reaction

Limiting Reactant Problems  2 starting amounts of reactants are given  The reactant that makes the least theoretical amount of product = Limiting  The reactant that makes more theoretical product = Excess  This much can’t be made  Some reactant is not used and still remains

Limiting Reactant Worksheet Consider the following reaction: 2 Al + 6 HBr → 2 AlBr H 2  a. When 3.22 moles of Al reacts with 4.96 moles of HBr, how many moles of H 2 are formed?  b. What is the limiting reactant?  c. For the reactant in excess, how many moles are left over at the end of the reaction?

Percent Yield  The maximum amount of product that can be obtained from a reaction is the theoretical yield  Frequently, the actual yield (the amount obtained in the lab) is less.  Percent Yield = actual X 100% theoretical