Solving Stechiometry Problems

Slides:

Advertisements

Similar presentations

Mole to Mole Conversions Last semester you learned to balance chemical equations. The coefficients in a balanced equation show molar ratios A molar ratio.

Advertisements

Balance the following equation: 2 CH 3 OH + 3 O 2 → 2 CO H 2 O Answer the following: 1.How many mol of Oxygen (O 2 ) are needed to produce exactly.

Stoichiometry Problem

The Arithmetic of Equations

Drill – 2/28/11 Sodium chloride decomposes into sodium and chlorine. How much (in grams) sodium chloride is required to produce 50.0g of chlorine gas?

Higher Chemistry Unit 1(a) Identifying a reactant in excess.

 Balance the following equation.  Fe + O 2  Fe 2 O 3  4Fe + 3O 2  2Fe 2 O 3  This means that when we combine four atoms of iron with three molecules.

Section 3 Section 3 – Part 1  Determine the limiting reagent in a reaction  Calculate the amount of product formed in a reaction, based on the limiting.

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 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.

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.

Solving Equations = 4x – 5(6x – 10) -132 = 4x – 30x = -26x = -26x 7 = x.

Limiting Reagents Stoichiometry Luckett. What is a limiting reagent? The reagent (reactant) that determines the amount of product that can be formed by.

Intro to Stoichometry. Mole Ratio Predict the products and balance the following equation: Li + O 2 

Yield: the amount of product Theoretical yield: the amount of product we expect, based on stoichiometric calculations Actual yield: amount of product.

Unit 8: Percent Yield Calculations

Section 3.3 Stoichiometry and Chemical Reactions.

Mass to Mass Stoichiometry Honors Chemistry Unit 5.

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

Stoichiometry mass and amount relationships between reactants and products in a chemical reaction.

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

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

Calculation of excess In an excess calculation you will be given

Solving Stoichiometry Problems

Given the following UNBALANCED equation, determine how many moles of potassium chlorate are needed to produce 10.0 mol of oxygen gas. 2KClO 3 (s) → 2KCl.

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

Stoichiometry. What Is It? Branch of chemistry that shows the relationships among reactants and products in a chemical reaction Equations must be balanced.

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

Stoichiometry Mole-Mass Mass-Mass. Mass-Mole Problems Step 1: Write a BALANCED EQUATION Step 2: Determine your known & unknowns Step 3: Convert known.

Define mole ratio (What is it? How is it determined?)

Chemistry 20 Stoichiometry. This unit involves very little that is new. You will merely be applying your knowledge of previous units to a new situation.

Stoichiometry. Proportional Relationships b I have 5 eggs. How many cookies can I make? 3/4 c. brown sugar 1 tsp vanilla extract 2 eggs 2 c. chocolate.

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.

Ch Stoichiometry Mole to Mole Conversions. The equation for a turkey sandwich might look like: 2 turkey + 1 cheese + 2 bread  1 turkey sandwich.

STOICHIOMETRY. The Problem  If 41.6 g of N 2 O 4 reacts with 20.8 g of N 2 H 4 the products will be nitrogen and water. What mass of water will be produced?

01 StoichiometryChapter 12. What conversion factors would you need if you were going to move from grams to liters? Solve the following problems. –How.

1 Pb(NO 3 ) 2 (aq) + KI (aq)  PbI 2 (s) + KNO 3 (aq) __ 212 Molarity and Stoichiometry M M V V P P mol M L M = mol L mol = M L What volume of 4.0 M KI.

Mol ratio: coefficients of a balanced equation 2 H 2 + O 2 → 2 H 2 O 2 mol H 2 for every 1 mol O 2 In chemical calculations, mol ratios convert moles of.

DO NOW!!! Back of Worksheet!

Stoichiometry Stoichiometry: is the study of the calculations of amounts of substances involved in chemical equations.

Calculations using balanced chemical equations Revision

Stoichiometry Chapter 12.

UNIT 11 STOICHIOMETRY Stoichiometry is the study of quantitative relationships between the amounts of reactants used and amounts of products formed by.

Stoichiometry Just Do It.

How many grams of zinc metal will react completely with 5. 4 L of 2

Limiting Reagents.

Bell Ringer Jan. 31 N2 + 3H2  2NH3 How many moles of NH3 are created from 18 grams of H2? How many moles of N2 are needed to create 42.

DO NOW Pick up notes. Get out Simple Stoichiometry handout (back of yesterday’s notes).

Solving Stoichiometry Problem

Unit 4: Chemical Equations and Stoichiometry

Intro to Stoichometry.

Limiting Reagents.

Unit 4: Chemical Equations and Stoichiometry

Chapter 9.1 stoichiometry –

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.

Stoichiometry Moles to Moles.

Particle Balancing Templates

14.6 – NOTES Limiting Reactants

HMSA: Agenda Work on Computer Simulation

Warm-up 50 grams of H2O 100 grams of CaCO3 150 grams of NaOH

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.

Practice How many grams of H2O are produced by completely reacting 24 g of O2? 2 H2 + O2  2 H2O convert to moles  convert to the desired molecule  convert.

Balanced scales and equations

Presentation transcript:

Solving Stechiometry Problems When the equation is given?

2 2 CuCl + H2S → Cu2S + HCl 0.2 mol = x 0.4 mol 0.4 mol x mol x mol How many moles of Cu2S are produced when 0.4 moles of CuCl react ? CuCl + H2S → Cu2S + HCl 2 2 0.4 mol 0.4 mol x mol x mol = x 2 mol 1 mol 0.2 mol 1. Balance the Equation 2. Place the relationship that the problem gives 3. Place the relation that the balanced equation gives 4.Solve the equation

2 2 CuCl + H2S → Cu2S + HCl dm3 = x 26.5 dm3 26.5 dm3 x dm3 x dm3 How many dm3 of Cu2S are produced when 26.5 dm3 of CuCl react ? CuCl + H2S → Cu2S + HCl 2 2 26.5 dm3 26.5 dm3 x dm3 x dm3 = x 2 mol 1 mol dm3 1. Balance the Equation 2. Place the relationship that the problem gives 3. Place the relation that the balanced equation gives 4.Solve the equation

2 2 CuCl + H2S → Cu2S + HCl g = x 35.2g 35.2g x g x g 2 mol 1 mol How many grams of Cu2S are produced when 35.2 g of CuCl react ? CuCl + H2S → Cu2S + HCl 2 2 35.2g 35.2g x g x g = x 2 mol 1 mol g 1. Balance the Equation 2. Place the relationship that the problem gives 3. Place the relation that the balanced equation gives 4.Solve the equation