'Thermochemical equations' diaporamas de présentation

Chapter 15

Chapter 15. Chemical Thermodynamics. Chapter Goals. Heat Changes and Thermochemistry The First Law of Thermodynamics Some Thermodynamic Terms Enthalpy Changes Calorimetry Themochemical Equations Standard States and Standard Enthalpy Changes

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Chapter Menu

Energy and Chemical Change. Section 15.1 Energy Section 15.2 Heat Section 15.3 Thermochemical Equations Section 15.4 Calculating Enthalpy Change Section 15.5 Reaction Spontaneity. Click a hyperlink or folder tab to view the corresponding slides. Exit. Chapter Menu. Section 15.1 Energy.

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Chapter 15: Energy and Chemical Change

CHEMISTRY Matter and Change. Chapter 15: Energy and Chemical Change. Table Of Contents. CHAPTER 15. Section 15.1 Energy Section 15.2 Heat Section 15.3 Thermochemical Equations Section 15.4 Calculating Enthalpy Change Section 15.5 Reaction Spontaneity.

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T h e r m o c h e m i s t r y

T h e r m o c h e m i s t r y. The study of energy transfers and chemical reactions Section 3 (lm). Thermochemical Equations. Balanced equations that include physical states of reactants & products and the energy change, expressed as ? H. Ex . Cellular respiration (Exothermic)

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Unit 2: Energy Changes and Rates of Reaction

Unit 2: Energy Changes and Rates of Reaction. Chapter 5 Thermochemistry Changes in Matter and Energy System vs. Surroundings Heat vs. Temperature q=mc ?T. What is THERMOCHEMISTRY?. THERMOCHEMISTRY is the study of the energy changes that accompany physical or chemical changes in matter.

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Dr. C. Yau Spring 2014

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Thermochemistry

0. Thermochemistry. Chapter 6. Dr. Victor H. Vilchiz. Thermochemistry. 0. Thermodynamics is the science that studies heat and its transformations to other forms of energy. Thermochemistry is the study of the quantity of heat absorbed or evolved in the case of chemical reactions. Energy.

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Thermochemistry

Thermochemistry. Chapter 5. Energy is the capacity to do work Thermal energy is the energy associated with the random motion of atoms and molecules Chemical energy is the energy stored within the bonds of chemical substances

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Unit 13 Thermochemistry

Unit 13 Thermochemistry. Day 1: Intro to Thermochemistry Videos and Alka Seltzer Lab (p.2-4). Energy and Chemistry: Crash Course Chemistry # 17 Enthalpy: Crash Course Chemistry #18. Alka Seltzer Lab. Step 1- Determine and record the active ingredients of Alka Seltzer tablets.

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Enthalpy Changes

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Entry Task: Oct. 1 st Monday

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Unit 10

Unit 10. Thermochemistry. Energy. Energy: ability to do work or produce heat. Kinetic energy: energy of motion Potential energy: due to composition or position of an object. Chemical systems contain both kinetic and potential energy.

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Open system matter & heat can enter/exit

Open system matter & heat can enter/exit. Isolated system neither matter nor heat can enter/exit e.g. The Universe. surroundings. system. Closed heat but not matter can enter/exit. system. The 1 st Law of Thermodynamics The energy of the universe is constant

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Thermochemical equations

Thermochemical equations. 16.3. 16.3 Thermochemical equations. Thermochemical equation = a balanced chemical equation that includes the physical states of all reactants and products and the enthalpy change (?H). Remember that enthalpy is the heat content of a system at constant pressure.

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Measuring heat changes

Measuring heat changes. Section 11.2. After reading Section 11.2, you should know:. How to write or interpret a thermochemical equation How to calculate heat changes in a chemical or physical process. Calorimetry.

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Thermochemical equations

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Chemistry 122

Chemistry 122. Calculating the Heats of Reaction. Hess's Law. It is sometimes difficult to measure the change in enthalpy in a reaction because the reaction does not actually happen. It is possible to measure the heat indirectly.

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