2. Objectives
• To know and understand the concept of
electrochemical cells.
• To understand the basics of voltaic and
electrolytic cells.
• To connect voltage from voltaic cells to
underlying REDOX chemistry.
• To determine the purpose of electric current in
electrolytic cells.
3.
4. Electrochemical Cell
is a device capable of either
generating electrical energy from
chemical reactions or using
electrical energy to cause
chemical reactions.
9. Application
• Portable voltaic cells generate
electricity to power devices for
our convenience such as battery
• All batteries are based on redox
reactions
10.
11. Electrolytic Cell
• Is a device use to convert electrical
energy into chemical potential
energy.
• Here, redox reaction is non-
spontaneous. This means that the
oxidation will not occur
spontaneously or can't occur by
itself, without any external driving
force.
12.
13. Electrolysis
A process in which electricity is used to
make a chemical change happen that
wouldn’t happen otherwise.
Chemical potential energy is the energy stored in the chemical bonds of a substance. The various chemicals that make up gasoline contain a large amount of chemical potential energy that is released when the gasoline is burned in a controlled way in the engine of the car.
Non-spontaneous means- It can't happen unless we make it happen.