Textbook Notes (368,241)
Canada (161,733)
Chemistry (28)
CHEM 1F92 (17)
Chapter 18

Chapter 18.docx

2 Pages
84 Views
Unlock Document

Department
Chemistry
Course
CHEM 1F92
Professor
Lydia W.L.Chen
Semester
Fall

Description
Chapter 18 – Electrochemistry 18.1 – Redox Reactions • Electrochemistry is a branch of chemistry that deals with the conversions between electrical and chemical energy. o Electrochemical processes are redox reactions.  The energy released from a spontaneous reaction is converted to electricity  Electrical energy is used to cause a non-spontaneous reaction to occur. Balancing Redox Reactions Ion-Electron Method • The overall reaction is split into its half reactions. Then, the half reactions are balanced separately. o First, all atoms other than O and H are balanced. • If the reaction takes place under acidic conditions, H O mol2cules are added to balance the O atoms. Then H are added to balance the H atoms. If the charges are not equal on both sides of the reaction, electrons are added. Then, the half reactions are multiplied by whole numbers so that there are an equal number of electrons in both reactions. Then, the half reactions are added, and electrons are cancelled. • If the reaction takes place under basic conditions, the same steps as for acidic conditions are followed. Then the same number of OH as the number of H present are added to both sides of the equation. The - + OH combine with the H to form water (on one side of the equation). Then, H O are cancelled2on both sides of the equation.
More Less

Related notes for CHEM 1F92

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit