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Slide 1 of 33
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Calorimetry
_________________ is the precise
measurement of the __________
________________ into or out of a system for
chemical and physical processes.
17.2
Slide 2 of 33
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Calorimetry
In ___________ , the ________
released by the system __
_________ ____ the ___________
absorbed by its surroundings.
Conversely, the heat absorbed by
a system is equal to the heat
released by its surroundings.
17.2
Slide 3 of 33
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Calorimetry
The insulated device used to measure the
absorption or release of heat in chemical or
physical processes is called a ____________.
17.2
Slide 4 of 33
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Calorimetry
Constant-Pressure Calorimeters
The ___________ __________________ of
a system at ____________
________________ is the same as a
property called the _____________ (H) of the
system.
17.2
Slide 5 of 33
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Calorimetry
Constant-Volume Calorimeters
Calorimetry experiments can be performed at a constant volume using a bomb calorimeter.
17.2
© Copyright Pearson Prentice Hall
SAMPLE PROBLEM
Slide 6 of 33
17.2
© Copyright Pearson Prentice Hall
Slide 7 of 33
Practice Problems for Sample Problem 17.2
© Copyright Pearson Prentice Hall
Measuring and Expressing Enthalpy Changes
>
Slide 8 of 33
Thermochemical Equations
In a chemical equation, the
_____________ _______________ for the
reaction can be written as either a
_____________ or a ____________.
17.2
Slide 9 of 33
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Thermochemical Equations
A chemical equation that includes the
enthalpy change is called a
_______________ equation.
17.2
Slide 10 of 33
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Thermochemical Equations
The heat of reaction is the enthalpy change for the chemical equation exactly as it is written.
17.2
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Slide 11 of 33
Thermochemical Equations17.2
Exothermic Reaction
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Slide 12 of 33
Thermochemical Equations17.2
Endothermic Reaction
© Copyright Pearson Prentice Hall
SAMPLE PROBLEM
Slide 13 of 33
17.3
© Copyright Pearson Prentice Hall
Slide 14 of 33
Practice Problems for Sample Problem 17.3
Slide 15 of 33
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Thermochemical Equations17.2
Slide 16 of 33
© Copyright Pearson Prentice Hall
>Measuring and Expressing Enthalpy Changes
Thermochemical Equations
The ___________ ________
_____________ is the heat of reaction for the
complete burning of _________
______________ of a substance.
17.2
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