CHE116_Lecture2_2011

CHE116_Lecture2_2011 - Chemistry Chemistry116 Lecture2...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
hemistry 116 Chemistry 116 Lecture 2 Topics: Reaction Rates Concentration and Rate Chapter 14.1 14.3
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Announcements Recitations begin next week. asteringChemistry on e omework is now MasteringChemistry on line homework is now “live” as of Thursday at 3:30PM. The number of MasteringChemistry tutorials has been reduced from the 13 indicated in the syllabus to only 8 on the MasteringChemistry website. Follow the assignments and deadlines as specified on the MasteringChemistry website.
Background image of page 2
Chemical Kinetics Chemistry is the study of the composition, ructure, and properties of matter and energy structure, and properties of matter and energy and the changes that matter undergoes. hemistry explains the macroscopic properties Chemistry explains the macroscopic properties of matter by exploring their nanoscale origins. Chemical kinetics deals with the rate at which chemical changes occur and also the atomic level reasons for the rates .
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chemical Kinetics In kinetics we study the rate at which a emical process occurs chemical process occurs. Besides information about the speed at hich reactions occur kinetics also sheds which reactions occur, kinetics also sheds light on the reaction mechanism (exactly ow e reaction occurs how the reaction occurs). Chemical reactions span a wide range of time scales.
Background image of page 4
Reaction Rates Chemists want to know what the reaction rates are for reactions d usually seek a means to and usually seek a means to speed up the reactions. Explosions occur in actions of a second. Corrosion (rusting) can fractions of a second. occur over many years.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
ctors That Affect Reaction Rates Factors That Affect Reaction Rates Physical State of the Reactants In order to react, molecules must come in contact with each other. For example, two solid blocks of reagents tend to react slowly with each other since only the molecules at the surfaces can interact. The more homogeneous the mixture of reactants (meaning better mixed), the faster the molecules can react.
Background image of page 6
ctors That Affect Reaction Rates Factors That Affect Reaction Rates Concentration of Reactants th tt i f As the concentration of reactants increases, so does the likelihood that actant molec les ill collide reactant molecules will collide.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 32

CHE116_Lecture2_2011 - Chemistry Chemistry116 Lecture2...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online