Chapter 6 - Thermochemistry

62 views4 pages
Published on 14 Apr 2011
School
Department
Course
Professor
Chapter 6 Thermochemistry
6.1 Chemical Hand Warmers
Thermochemistry: The study of the relationships between chemistry and energy
6.2 The Nature of Energy: Key Definitions
- Energy (E): The capacity to supply heat or do work
- Kinetic Energy (Ek): The energy of motion or energy that is being transferred, Ek = ½ m*v2
units are Joules (J)
- Potential Energy (Ep): Stored energy of energy associated with the composition and
position of the object
Units: 1 cal =4.184 J
- System: Material or process within one is studying the energy changes within
- Surroundings: Everything else with which the system can exchange energy with
- Heat: Energy transferred between a system and its surrounding as a result of temperature
difference, heat flows from HOTTER to COLDER (temperature may change and phase may
change)
6.3 The First Law of Thermodynamics: There is No Free Lunch
- First Law of Conservation of Energy: Energy CANNOT be created or destroyed, when
energy is transferred or converted between objects, the total amount of energy present at
the beginning must be present at the end
- Energy Flow and Conservation of Energy:
- Internal Energy E: Sum of kinetic and potential energies of all particles that compose the
system, changes depend on the amount of energy at the beginning and end
- State Function: Mathematical function whose result only depends on initial and final
conditions
6.4 Quantifying Heat and Work
www.notesolution.com
Unlock document

This preview shows page 1 of the document.
Unlock all 4 pages and 3 million more documents.

Already have an account? Log in

Get OneClass Notes+

Unlimited access to class notes and textbook notes.

YearlyBest Value
75% OFF
$8 USD/m
Monthly
$30 USD/m
You will be charged $96 USD upfront and auto renewed at the end of each cycle. You may cancel anytime under Payment Settings. For more information, see our Terms and Privacy.
Payments are encrypted using 256-bit SSL. Powered by Stripe.