11-3: Limiting Reactants and Percent Yield

Slides:

Advertisements

Similar presentations

Stoichiometry: The study of quantitative measurements in chemical formulas and reactions Chemistry – Mrs. Cameron.

Advertisements

Using Everyday Equations

Limiting Reactants & Percent Yield. Limiting Reactants  The reactant that limits the amount of product formed in a chemical reaction. The quantity of.

11-3: Limiting Reactants and Percent Yield

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

Laboratory 08 LIMITING REACTANT LAB.

Ch. 9 Notes – Chemical Quantities

Limiting Reagent Coach Cox.

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 Reagent and Percent Yield

Limiting and Excess Reagents

P ERCENT Y IELD. OBJECTIVE I can calculate percent yield of a reaction.

The general steps for finding PERCENT YIELD : * Write the balanced chemical equation * Find the limiting reactant * Find the theoretical yield (what you.

1 Chapter 9-Stoichiometry Stoichiometry – measures and calculates amounts of chemicals in a reaction. A.Mole/Mole Problems Coefficients: Show # of molecules.

*Notice, kind of like the opposite of Percent Error.

Stoichiometry Kelley Kuhn CCA. What the heck is stoichiometry? Stoichiometry is what we use in chemistry to solve problems. For example, you can use stoichiometry.

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

Stoichiometry Chapter 9 Limiting reagents. In Stoichiometry: We work in moles. We cannot calculate grams of product from grams of reactant.

Ch. 9 Notes – Chemical Quantities

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.

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

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.

Ch. 9 Notes – Chemical Quantities Stoichiometry refers to the calculations of chemical quantities from __________________ chemical equations. Interpreting.

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.

Video 9-1 Reaction Stoichiometry Steps for Problem Solving.

Stoichiometry & Limiting Reactants. Stoichiometric Calculations The coefficients in the balanced equation give the ratio of moles of reactants and products.

Chapter 12: Stoichiometry WASILLLA HIGH SCHOOL

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

SOL Review 6 Stoichiometry. Consider: 4NH 3 + 5O 2  6H 2 O + 4NO Many conversion factors exist: 4 NH 3 6 H 2 04NO 5O 2 (and others) 5 O 2 4 NO4 NH 3.

Stoichiometry Limiting reagents

Chapter 9: Stoichiometry

Sec 12.3 limiting reactant, percent, actual and theoretical Yield

Chapter 9 STOICHIOMETRY

Chemistry I Objectives Chapter 11

Moles to Moles Stoichiometry Calculation Notes

Using the Balanced Equation

Percentage Yield.

Limiting Reactant There are MANY different ways to solve Limiting Reactant questions depending on what is asked – this is one way…

Chapter 12 Review.

Agenda: 1/13/2017 Go over the procedure for the Molarity Lab

Limiting and Excess Reactants

Limiting Reactant/Reagent Problems

HONORS CHEMISTRY Feb 27, 2012.

Theoretical Yield.

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

Mathematics of Chemical Equations

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.

Ch. 9 Notes -- Stoichiometry

*Notice, kind of like the opposite of Percent Error.

Stoichiometry Chapter 12.

Unit 5 STOICHIOMETRY.

Stoichiometry & Limiting Reactants

Information Given by Chemical Equations

Percent Yield Unit 8 Lesson 3.

Percentage Yield.

Chemical Reactions Limiting Reagent.

PERCENT YIELD Unit 8 Lesson 2.

Limiting Reactant There are MANY different ways to solve Limiting Reactant questions depending on what is asked – this is one way…

Chapter 9- Stoichiometry:

Stoichiometry Presentation

Reaction Stoichiometry

Presentation transcript:

11-3: Limiting Reactants and Percent Yield

Limiting Reactant Pretend that you want to put together some toy cars from some pre-assembled bodies. All you had to do is add the wheels. If you have 22 wheels and 6 bodies, how many cars can you make? Well, 6 cars x 4 wheels = 24 total wheels needed. Since you don’t have that many wheels, the wheels that you DO have limit how many cars that you can make.

Limiting Reactant The same is true in chemistry. Consider the following chemical equation… 2H2 + O2  2 H2O Well, there has to be SOME perfect ratio of hydrogen gas to oxygen gas. If that perfect ratio isn’t what you have in reality, one of the two reactants LIMITS how much product that you can make.

Limiting Reactant Limiting reactant (reagent): the reactant that limits the amount of product formed in a chemical reaction You CANNOT identify the limiting reactant just by looking at whichever reactant that you have the least. You have to use stoichiometry to find the limiting reactant.

Steps in finding the LR Write and balance your chemical equation. Calculate the mass of a product formed by each reactant. The reactant that produces the smaller amount of product is your limiting reactant.

Sample Problem #5 (pg. 368)

Sample Problem #6 (pg. 370)

Percent Yield Percent yield: a comparison between what you actually produce in an experimental trial and what you should theoretically produce. Theoretical yield: amount of product that should be produced, based on calculations Actual yield: amount of product that is actually produced in your experiment.

Percent Yield Percent yield = (actual yield) x100 (theoretical yield) Sample problem #7 (pg. 372) Practice problem #14 (pg. 372)