For a basic solution, there are 2 extra steps (Steps #8 and #9)
Step 8: Add same # of OH-irns to each side of balanced equation
(as same #H+ ions)
Step 9:
cancel +
out make #20 Molecules (add to OG equation
Work through Worked Example 19.1. Once you understand the steps needed to solve this type
of problem, challenge yourself with the 3 Practice Problems (Attempt, Build, Conceptualize).
Section 19.2 Galvanic Cells
A galvanic (or voltaic) cell is an apparatus that generates electricity through the use of a
spontaneous reaction.
_________________
anode
In an electrochemical cell, oxidation occurs at the _____________ and reduction occurs at the
cathode
___________.
What is a half-cell? one
component of an electrochemical cell containing an
electrode immersed in a solution
Electrons always flow from the _____________ cathode ( )
anode (t to the ________________. +
What is the purpose of the salt bridge? connects the anode & cathode solutions
so that cations & anious can more from one half-cell to another
Ecell is the symbol for cell potential. What other terms are used interchangeable with cell
potential?
A galvanic cell uses the following half-reactions:
Oxidation: Zn(s) → Zn2+(aq) + 2e− oxidized :
Anode
Reduction: Cu2+(aq) + 2e− → Cu(s) reduced :
cathode
-
Assign the anode and the cathode.
Write the overall balanced spontaneous redox reaction that occurs:
Write the cell diagram (vertical line notation) for this galvanic cell:
In(s) /In (Imi//cu' +
(1M) /Cu(s)
What does a single vertical line mean? What does a double vertical line mean?
a phase boundary
salt bridge
By convention, which electrode is on the left?
anode written to left ,
and then goes in order to cathode on right 2
Step 8: Add same # of OH-irns to each side of balanced equation
(as same #H+ ions)
Step 9:
cancel +
out make #20 Molecules (add to OG equation
Work through Worked Example 19.1. Once you understand the steps needed to solve this type
of problem, challenge yourself with the 3 Practice Problems (Attempt, Build, Conceptualize).
Section 19.2 Galvanic Cells
A galvanic (or voltaic) cell is an apparatus that generates electricity through the use of a
spontaneous reaction.
_________________
anode
In an electrochemical cell, oxidation occurs at the _____________ and reduction occurs at the
cathode
___________.
What is a half-cell? one
component of an electrochemical cell containing an
electrode immersed in a solution
Electrons always flow from the _____________ cathode ( )
anode (t to the ________________. +
What is the purpose of the salt bridge? connects the anode & cathode solutions
so that cations & anious can more from one half-cell to another
Ecell is the symbol for cell potential. What other terms are used interchangeable with cell
potential?
A galvanic cell uses the following half-reactions:
Oxidation: Zn(s) → Zn2+(aq) + 2e− oxidized :
Anode
Reduction: Cu2+(aq) + 2e− → Cu(s) reduced :
cathode
-
Assign the anode and the cathode.
Write the overall balanced spontaneous redox reaction that occurs:
Write the cell diagram (vertical line notation) for this galvanic cell:
In(s) /In (Imi//cu' +
(1M) /Cu(s)
What does a single vertical line mean? What does a double vertical line mean?
a phase boundary
salt bridge
By convention, which electrode is on the left?
anode written to left ,
and then goes in order to cathode on right 2
