STOICHIOMETRY. What is stoichiometry? ● quantitative study of a chemical reaction.

Slides:

Advertisements

Similar presentations

Mole Review 1.) Calculate the number of moles in 60.4L of O2. 2.) How many moles are there in 63.2g of Cl2? 1 mol O2 60.4L O2 = 2.7 mol O2 22.4L O2 1mol.

Advertisements

STOY-KEE-AHM-EH-TREE. It‘s the study of amounts of substances that are involved in reactions.

Stoichiometry with Chemical Reactions

How many moles of water will be produced when 8 grams of hydrogen gas react with the oxygen in the air? Episode 801.

Stoichiometry The Study of Quantitative Relationships.

STOICHIOMETRY Part II Mole-Mole Relationships

April 3, 2014 Stoichiometry. Stoichiometry is the study of quantities of materials consumed and produced in chemical reactions Stoikheion (Greek, “element”)

Stoichiometry Calculating Masses of Reactants and Products.

Things you must KNOW and what to expect  Things you must KNOW  You must KNOW your polyatomics  You must KNOW how to write a balanced formula  You have.

Sec. 11.2: Stoichiometric Calculations

STOICHIOMETRY. What is stoichiometry? Stoichiometry is the quantitative study of reactants and products in a chemical reaction.

STOICHIOMETRY. I CAN solve a stoichiometry (mass – mass) problem using a chemical equation and mass data.

STOICHIOMETRY 4 Mole-Mole 4 Mole-Mass 4 Mass-Mass.

Stoichiometry Section 12.1.

Proportional Relationships b Stoichiometry mass relationships between substances in a chemical reaction based on the mole ratio b Mole Ratio indicated.

Gases & Stoichiometry. Molar Volume 1 mol of gas = 22.4 L  molar volume What volume would be occupied by 0.77 moles of helium gas at STP?

MASS TO MASS STOICHIOMETRY. MOLE-MASS PROBLEMS  Problem 1: 1.50 mol of KClO 3 decomposes. How many grams of O 2 will be produced? [k = 39, Cl = 35.5,

Stoichiometry Sherlock Holmes, in Sir Arthur Conan Doyle’s A Study in Scarlet “In solving a problem of this sort, the grand thing is to be able to reason.

Section 2.9 page 144 Stoichiometry is the science of using balanced chemical equations to determine exact amounts of chemicals needed or produced in a.

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

Stoichiometry – Chemical Quantities Notes. Stoichiometry Stoichiometry – Study of quantitative relationships that can be derived from chemical formulas.

Stoichiometry Chapter Stoichiometry Stoichiometry is the study of quantitative relationships between the amounts of reactants used and amounts.

No Bell Ringer Today. We will have a test next Tuesday.

1 Chapter 4 Chemical Equations and Stoichiometry.

Stoichiometry and cooking with chemicals.  Interpret a balanced equation in terms of moles, mass, and volume of gases.  Solve mole-mole problems given.

STOICHIOMETRY. What is stoichiometry? Stoichiometry is the quantitative study of reactants and products in a chemical reaction.

Stoichiometry MolesMass Remember! You cannot convert directly from a mass of one substance to the mass of another substance! You must always find moles.

Stoichiometry Chapter 9. Stoichiometry: Calculation of the quantities of substances involved in chemical reactions 4 Classes of Problems: Mole-Mole Mole-Mass.

Can’t directly measure moles Measure units related to moles: –Mass (molar mass) –Number of particles (6.02 x ) –Liters of gas (22.4 Liters at STP)

By: Rita Akhian Q. 4 technology project Chemistry.

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

1 Calculations from Chemical Equations Mole-Mole Calculations Mole-Mass Calculations Mass-Mass Calculations Stoichiometry Tuesday, April 5 th, 2016.

Section 2: Stoichiometric Calculations Chapter 8: Quantities in Chemical Reactions.

Stoichiometry Grams – Moles Grams – Grams. What is Stoichiometry? Chemists are often responsible for designing a chemical reaction and analyzing the products.

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.

Stoichiometry. Stoichiometry Stoichiometry – the process of using a balanced chemical equation to calculate the relative amounts of reactants and products.

Stoichiometry Introduction to Chemistry. Stoichiometry Example: 2H 2 + O 2 → 2H 2 O Equivalencies: 2 mol H 2 for every 1 mol O 2 2 mol H 2 for every 2.

Calculations from Chemical Equations

Chapter 9 Chemical Quantities in Reactions

Gas Stoichiometry Molar volume can be used in stoichiometry calculations to convert quantities of chemicals in a chemical reaction. This ONLY works if.

Law of Conservation of Matter

Starter 1/4 Identify the type of reaction and then write the balanced chemical equation for the reaction described below “aluminum oxide is heated”

Unit 8: Stoichiometry: Part 1

Mathematics in Chemistry

STOICHIOMETRY Chapter 9

Chemical Reactions Unit

Gas Stoichiometry At STP

Stoichiometry “In solving a problem of this sort, the grand thing is to be able to reason backward. This is a very useful accomplishment, and a very easy.

Stoichiometric Calculations (p. 352 – 367)

Section 2.9 page 144 Stoichiometry is the science of using balanced chemical equations to determine exact amounts of chemicals needed or produced in a.

Section 2: Stoichiometric Calculations

STOICHIOMETRY – To determine, using stoichiometric calculations, the quantity of a substance involved in a chemical reaction. 5.8 – To solve numerical.

Stoichiometry Lesson # 1.

Based on the Law of Conservation of Mass

Calculations Based on Chemical Equations

STOICHIOMETRY Chapter 9

Chemical Calculations

9.1/9.2 Stoichiometric Calculations

Stoichiometry Follow along in your text Chapter 9 Section 1 Pages 302 – 311 Put on Pg.33 of your notebook!

Using Stoichiometry Chemists use stoichiometry to predict amounts of reactants used and products formed in specific reactions.

Presentation transcript:

STOICHIOMETRY

What is stoichiometry? ● quantitative study of a chemical reaction

Stoichiometry/mole Ratios A mole ratio converts moles of one compound in a balanced chemical equation into moles of another compound.

Example Reaction between magnesium and oxygen to form magnesium oxide. ( fireworks) 2 Mg (s) + O 2(g) 2 MgO(s) Stoichiometry/Mole Ratio: 2 moles : 1 mole:2 moles

1) N H 2 → 2 NH 3 What stoichiometry/mole ratios exist in this reaction? Practice Problem

What You Should Expect Given : Amount of reactants or products Question: how much of something else is formed or needed? Example 2A + 2B 3C Given 20.0 grams of A and lots of B, how many grams of C can be produced?

1) A can of butane lighter fluid contains 1.20 moles of butane (C 4 H 10 ). Calculate the number of moles of carbon dioxide given off when this butane is burned completely. Practice Problems

Steps for Stoichiometry Problems 1.Balance the chemical equation 2.Get moles of given compound (may need to use molar mass). 3.Using stoichiometry (mole:mole ratio from balanced reaction), convert from the limiting reagent or product to the desired compound. 4.Using molar mass of the unknown substance, convert moles to mass.

Mole-Mole Problems Using the practice question 2) above: Equation of reaction 2C 4 H O 2 8CO H 2 O Mole ratio C 4 H 10 CO 2 1: : X By factor-label method or cross-multiplication, X = 4.8 mols of CO 2 given off

Mole-Mass Problems Problem 2: 1.50 mol of KClO 3 decomposes. How many grams of O 2 will be produced? 2 KClO 3 2 KCl + 3 O 2

CHALLENGE lb propane tanks explode and burns completely. What volume of the greenhouse gas, CO 2, was produced during this reaction? 1 pound = kilograms density of CO 2(g) = g/L