Lon-Capa 4 th HW assignment due Friday, 10/9, 5 pm. It is open now. 3 rd Quiz due Sunday, 10/11 by 10 pm. It will open Friday, 10/9 at 5 pm. 5 th HW assignment.

Slides:

Advertisements

Similar presentations

Liquids and Solids Water.

Advertisements

To do 4 th HW assignment due Friday, 2/27, 10 pm. It is open now. 3 rd Quiz Friday, 2/27 in Discussion. Read Chapter and do text HW for Thursday.

Unit 1 PPA 3 ENTHALPY OF COMBUSTION. ENTHALPY OF COMBUSTION (Unit 1 PPA3) (1) Write the balanced equation for the enthalpy of combustion of ethanol. (2)Draw.

Entry Task: May 22nd 23rd Block 1

Ch. 16: Energy and Chemical Change

Lon-Capa 4 th HW assignment due today, 5 pm. 3 rd Quiz due Sunday, 10/12 by 10 pm. It will open today at 5 pm. 5 th HW assignment is also open! 1.

Enthalpy C 6 H 12 O 6 (s) + 6O 2 (g) --> 6CO 2 (g) + 6H 2 O(l) kJ 2C 57 H 110 O O 2 (g) --> 114 CO 2 (g) H 2 O(l) + 75,520 kJ The.

Calculations in Chapter 10. Molar Enthalpy of Fusion Used when melting or freezing = ___energy ____ mol of substance Can be arranged to find any of the.

Enthalpy EQ: How do you predict the sign of delta H?

1 Characteristics of  S surr The sign of  S surr depends on whether the reaction or process is exothermic (  S surr >0 or “favorable”) or endothermic.

Announcements If you don’t have a clicker with you, sign in after class If you don’t have a clicker with you, sign in after class Chapter 19 Homework has.

Enthalpy of Solution. HIGHER GRADE CHEMISTRY CALCULATIONS Enthalpy of Solution. The enthalpy of solution of a substance is the energy change when one.

CHAPTER 17 THERMOCHEMISTRY.

Enthalpy of Combustion

Enthalpy of Combustion Calculations. Example Q. 4.6g of ethanol (C 2 H 5 OH) is burned. The energy released raised the temperature of 0.5kg of water by.

Practice Energy Calculation Quiz. How much energy does it take to convert 722 grams of ice at  211  C to steam at 675  C? (Be sure to draw and label.

Energetics 6.1 What is Energetics?

A 3.51 g sample of benzene, C 6 H 6, was burned in a bomb calorimeter in an excess of oxygen. The initial temperature was o C and rose to

Thermo- Chemistry Heat Transfer Thermo Equations Phase changes F.

1) vocab word--the quantity of heat needed to raise the temperature of 1 g of water 1°C 2) vocab word--the amount of energy required to raise the temperature.

Enthalpy Change and Chemical Reactions

Basic Chemistry Copyright © 2011 Pearson Education, Inc. 1 Chapter 10 Structures of Solids and Liquids 10.5 Changes of State.

Thermochemical equations Thermochemical equations  Thermochemical equation = a balanced chemical equation that includes the physical states.

1.2.2 Heat of Formation.  Standard Heat of Formation Δ H o f  the amount of energy gained or lost when 1 mole of the substance is formed from its elements.

States of Matter Water. States of Matter  Objectives  Describe the structure of a water molecule  Discuss the physical properties of water. Explain.

For exothermic rxns, the heat content of the reactants is larger than that of the products. enthalpy of reaction:  H rxn = H products – H reactants (also.

SCH4U Thermodynamics. * Energy difference between the reactants and products. ΔH = H products - H reactants As long as pressure remains constant, the.

Friday, Oct. 25 th : “A” Day Monday, Oct. 28 th : “B” Day Agenda  Homework questions/Quick review  Section 10.2 Quiz: “Using Enthalpy”  Section 10.3:

New Way Chemistry for Hong Kong A-Level Book 11 Chapter 6 Energetics 6.1 What is Energetics? 6.2 Ideal Enthalpy Changes Related to Breaking and Formation.

Basic Chemistry Copyright © 2011 Pearson Education, Inc. 1 Chapter 10 Structures of Solids and Liquids 10.5 Changes of State.

CHEMISTRY DEPARTMENT WAID ACADEMY ENTHALPY. The enthalpy of combustion of methanol, CH 3 OH, is -715 kJ mol -1. The mass of methanol which has to be burned.

Enthalpy (H) is used to quantify the heat flow into or out of a system in a process that occurs at constant pressure. Enthalpy is defined as H = E + PV.

Lon-Capa 4 th HW assignment due Friday, 10/9, 5 pm. It is open now. 3 rd Quiz due Sunday, 10/11 by 10 pm. It will open Friday, 10/9 at 5 pm. 5 th HW assignment.

1 Calorimetry (4-2). Calorimetry Calorimetry - the accurate and precise measurement of heat change for chemical and physical processes. The device used.

Chapter 17: Thermochemistry

Thermodynamics. Every physical or chemical change is accompanied by energy change Thermodynamics = branch of chemistry that studies energy changes –Specifically:

Chapter 17: Thermochemistry 17.1 The Flow of Energy – Heat and Work.

Molar Enthalpy Recall that when we write a thermochemical equation the coefficients represent moles of particles Therefore, 1 H 2(g) + ½ O 2(g)  1 H 2.

DO YOU REMEMBER: Vaporization? Evaporation? Condensation? Sublimation? Deposition? Potential Energy changes? Kinetic Energy changes? Triple Point?

1 OBJECTIVES: –Classify, by type, the heat changes that occur during melting, freezing, boiling, and condensing. –Calculate heat changes that occur during.

Thermochemistry 3 Calorimetry & Heat of Formation.

Chapter 14: Liquids and Solids

Chapter 16 Preview Multiple Choice Short Answer Extended Response

ENTHALPY DH = Hfinal - Hinitial Process is ENDOTHERMIC

Chemistry Spring Midterm Review

Heating and Cooling Curves

Enthalpy and Calorimetry

Announcements Lon-Capa: 5th HW assignment due Friday 10/21 by 5 pm.

Announcements Lon-Capa: 5th HW assignment due Friday 10/21 by 5 pm.

Change in Enthalpy State function ΔH = q at constant pressure

As always… OWL Lon-Capa assignments Lecture videos Textbook Read

To Do 5th HW assignment due Friday by 10 pm.

To Do 5th HW assignment due Friday by 10 pm.

Lon-Capa 4th HW assignment due Friday, 10/7, 5 pm. It is open now.

Endothermic and Exothermic Reactions

As always… OWL Lon-Capa assignments Lecture videos Textbook Read

As always… OWL Lon-Capa assignments Lecture videos Textbook Read

As always… OWL Lon-Capa assignments Lecture videos Textbook

As always… Lon-Capa assignments Lecture videos Textbook Read

Section 5 Water Chapter 10 Ice and Water.

Enthalpy (∆H).

Phase Diagram for Water

Chapter 16 Preview Multiple Choice Short Answer Extended Response

11.5 – NOTES Heat of Combustion and Phase Changes

Chapter 16: Energy and Chemical Change

ENTHALPY OF COMBUSTION ΔHc

As always… Lon-Capa assignments Lecture videos Textbook Read

Thermodynamics tutorhour 6

Presentation transcript:

Lon-Capa 4 th HW assignment due Friday, 10/9, 5 pm. It is open now. 3 rd Quiz due Sunday, 10/11 by 10 pm. It will open Friday, 10/9 at 5 pm. 5 th HW assignment is also open! 1

2 Clicker Question Given the following data 2NH 3 (g)  N 2 (g) + 3H 2 (g)  H = 92kJ 2H 2 (g) + O 2 (g)  2H 2 O(g)  H = -484kJ Determine ΔH for 2N 2 (g) + 6H 2 O(g)  3O 2 (g) + 4NH 3 (g) a) kJ b) 1268 kJ c) 1636 kJ d) kJ e) I did not/cannot get any of these answers.

3 Pathway for the Combustion of Methane

4 Schematic Diagram of Energy Changes

5 Chapter 9: Problem #99 When water is supercooled, it freezes at a temperature below 0.0°C. If 10.9 kJ of energy as heat is released when 2.00 mol of supercooled water at –15.0°C freezes, calculate the molar enthalpy of fusion for ice at 0.0°C and 1 atm. Assume the molar heat capacities are temperature independent. [for H 2 O(l): 75.3J/Kmol, for H 2 O(s): 37.5J/Kmol]