I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek:...

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I. Stoichiometr ic Calculations Stoichiometry Stoichiometry

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Transcript of I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek:...

Page 1: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

I. Stoichiometric

Calculations

I. Stoichiometric

Calculations

StoichiometryStoichiometry

Page 2: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

History of StoichiometryHistory of StoichiometryHistory of StoichiometryHistory of Stoichiometry

Comes from the Greek:

Stoicheion

- to measure the elements

Page 3: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

History of StoichiometryHistory of StoichiometryHistory of StoichiometryHistory of Stoichiometry

Joseph Black and Daniel Rutherford

studied the reaction

CaCO3 CaO + CO2

They were looking at how the mass was changing in the reaction. They realized there the relation in the changing mass was actually in moles of substance.

Page 4: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

Proportional Proportional RelationshipsRelationshipsProportional Proportional RelationshipsRelationships

StoichiometryStoichiometry• mass relationships between

substances in a chemical reaction• based on the mole ratio

Mole RatioMole Ratio• indicated by coefficients in a

balanced equation

2 Mg + O2 Mg + O22 2 MgO 2 MgO

Page 5: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

Stoichiometry ProblemsStoichiometry ProblemsStoichiometry ProblemsStoichiometry Problems

How many moles of KClO3 must decompose in order to produce 9 moles of oxygen gas?

9 mol O2 2 mol KClO3

3 mol O2

= 6 mol KClO3

2KClO3 2KCl + 3O2 ? mol 9 mol

Page 6: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

Stoichiometry ProblemsStoichiometry ProblemsStoichiometry ProblemsStoichiometry Problems

How many moles of KCl are produced when 3.6 mol of KCLO3 are decomposed?

3.6 mol KClO3

2 mol KCl2 mol KClO3

= 7.2 mol KCl

2KClO3 2KCl + 3O2 ? mol3.6 mol

Page 7: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

Stoichiometry ProblemsStoichiometry ProblemsStoichiometry ProblemsStoichiometry Problems

Do Mole to Mole WS

Page 8: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

Stoichiometry StepsStoichiometry Steps Stoichiometry StepsStoichiometry Steps

1. Write a balanced equation.2. Identify known & unknown.3. Line up conversion factors.

• Mole ratio - moles moles• Molar mass - moles grams• Molarity - moles liters soln• Molar volume - moles liters gas

Core step in all stoichiometry problems!!

• Mole ratio - moles moles

4. Check answer.

Page 9: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

1 mol of a gas=22.4 Lat STP

Molar Volume at STPMolar Volume at STP Molar Volume at STPMolar Volume at STP

Standard Temperature & Pressure0°C and 1 atm

Page 10: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

““Stoich – nid”Stoich – nid”““Stoich – nid”Stoich – nid”

Page 11: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

Stoichiometry ProblemsStoichiometry ProblemsStoichiometry ProblemsStoichiometry Problems

How many grams of silver will be formed when 12.0 g copper react with excess

aqueous silver nitrate?

12.0g Cu

1 molCu

63.55g Cu

= 40.7 g Ag

Cu + 2AgNO3 2Ag + Cu(NO3)2

2 molAg

1 molCu

107.87g Ag

1 molAg

12.0 g ? g

Page 12: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

63.55g Cu

1 molCu

Stoichiometry ProblemsStoichiometry ProblemsStoichiometry ProblemsStoichiometry Problems

How many grams of Copper atoms are required to react completely with 1.5 x 1023 formula units of AgNO3?

1.5 x 1023

Form units AgNO3

1molAgNO3

6.022 x 1023

Form units AgNO3

= 7.9 g Cu

Cu + 2AgNO3 2Ag + Cu(NO3)2

1 mol Cu

2 molAgNO3

? g 1.5 x 1023

form units

Page 13: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

How many grams of KClO3 are req’d to

produce 9.00 L of O2 at STP?

9.00 LO2

1 molO2

22.4 L O2

= 32.8 g KClO3

2 molKClO3

3 molO2

122.55g KClO3

1 molKClO3

? g 9.00 L

Stoichiometry ProblemsStoichiometry ProblemsStoichiometry ProblemsStoichiometry Problems

2KClO3 2KCl + 3O2

Page 14: I. I.Stoichiometric Calculations Stoichiometry. History of Stoichiometry b Comes from the Greek: Stoicheion - to measure the elements.

Stoichiometry ProblemsStoichiometry ProblemsStoichiometry ProblemsStoichiometry Problems

Do Stoich WS 1


I. I.Stoichiometric Calculations The Big Kahuna Stoichiometry.

I. I.Stoichiometric Calculations The Big Kahuna Stoichiometry.

C. Johannesson I. I.Stoichiometric Calculations (p. 275-287) Stoichiometry – Ch. 9.

C. Johannesson I. I.Stoichiometric Calculations (p. 275-287) Stoichiometry – Ch. 9.

Stoichiometry. Stoichiometry Stoy – key – ohm – e - tree.

Stoichiometry. Stoichiometry Stoy – key – ohm – e - tree.

10 stoichiometry

10 stoichiometry

Atomic Masses Chapter 3 Stoichiometry C atom is …ww2.odu.edu/~ppleban/pdf/chem115/Chap3Zumdahl.pdfChapter 3 Stoichiometry Chemical Stoichiometry • Stoichiometry - The study of

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Stoichiometry Ideal Stoichiometric Calculations. Stoichiometry Mole – Mole Stoichiometry Conversion.

Stoichiometry Ideal Stoichiometric Calculations. Stoichiometry Mole – Mole Stoichiometry Conversion.

Chapter 12 “Stoichiometry” Chemistry Tutorial Stoichiometry Mr. Mole.

Chapter 12 “Stoichiometry” Chemistry Tutorial Stoichiometry Mr. Mole.

CHEMISTRY STOICHIOMETRY & COLLOIDS STOICHIOMETRY & COLLOIDS.

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Stoichiometry and The Mole 6.02 X 10 23 The word stoichiometry derives from two Greek words: stoicheion (meaning "element") and metron (meaning "measure").

Stoichiometry and The Mole 6.02 X 10 23 The word stoichiometry derives from two Greek words: stoicheion (meaning "element") and metron (meaning "measure").

Quantities in Chemical Reactions. Stoichiometry (Greek): Stoicheion = “element” Metron = “to measure”

Quantities in Chemical Reactions. Stoichiometry (Greek): Stoicheion = “element” Metron = “to measure”

II. Stoichiometry in the Real World Stoichiometry – Unit. 10.

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I. I.Stoichiometric Calculations Topic 9 Stoichiometry Topic 9 Stoichiometry.

I. I.Stoichiometric Calculations Topic 9 Stoichiometry Topic 9 Stoichiometry.

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

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

Atomic Masses Chapter 3 Stoichiometry C atom is (1.0836129)(12ppleban/pdf/chem115/Chap3Zumdahl.pdf · Stoichiometry Chemical Stoichiometry • Stoichiometry - The study of quantities

Atomic Masses Chapter 3 Stoichiometry C atom is (1.0836129)(12ppleban/pdf/chem115/Chap3Zumdahl.pdf · Stoichiometry Chemical Stoichiometry • Stoichiometry - The study of quantities

Stoichiometry ok1294993172

Stoichiometry ok1294993172

9. STOICHIOMETRY

9. STOICHIOMETRY

Gas Stoichiometry. GAS STOICHIOMETRY We have looked at stoichiometry: 1) using masses & molar masses, & 2) concentrations. We can use stoichiometry.

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Stoichiometry What’s that you said?. What is Stoichiometry? Stoichiometry is the numerical relationships in chemical reactions.

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Stoichiometry .

Stoichiometry .

Stoichiometry is the relationship - Weebly...Chemistry 11 Stoichiometry Notes Key 1 Unit 7 STOICHIOMETRY 1. Introduction to Stoichiometry 2. Mole Mole Stoichiometry 3. Mass Mole Stoichiometry

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