Class XII
Electro - Chemistry
"The study of chemical reactions in which ion solution, electrolysis and electric cells are included is said to be Electro - Chemistry."
Or
"The study of production of electricity from energy released during spontaneous chemical reaction and the use of electrical energy to bring about non-spontaneous chemical transformations."Batteries and fuel cells convert chemical energy into electrical energy. This energy is used in various types instruments and devices. This energy produces less pollution. This energy is eco friendly.
Electro Chemical Cell
The cell which converts chemical energy into electrical energy is said to be Electro Chemilal Cell.
The device in which the concentration of Zinc ion and Copper ion is unity and electric potential is 1.1 the device is said to galvanic or voltaic cell.
The galvanic cell is an electrochemical cell that converts the chemical energy of spontaneous redox reaction into electrical energy in this device the Gibbs energy of spontaneous redox reaction is converted into electrical work which may be used for running a motor or other electrical gadgets like heater, fan geyser, etc.
The potential difference between the two electrodes and as soon as the switch is in the on position the electrodes the electrons follows from negative to positive electrode.. The direction of current flow is opposite to that of electron flow.
The potential difference between the two electrodes of a galvanic cell is called the cell potential. The unit of cell potential is volts.
The cell potential is the difference between the electrode potentials of the cathode and anode.
This is said to be the cell Electromotive Force. It is generally denoted by emf. The unit of emf is volts.
The emf of the cell is positive. It is equal to potential of the half cell on the right hand side minus the potential of the half cell on left hand side.
Ecell = Eright - Eleft
Continue ..............................................
The device in which the concentration of Zinc ion and Copper ion is unity and electric potential is 1.1 the device is said to galvanic or voltaic cell.
The galvanic cell is an electrochemical cell that converts the chemical energy of spontaneous redox reaction into electrical energy in this device the Gibbs energy of spontaneous redox reaction is converted into electrical work which may be used for running a motor or other electrical gadgets like heater, fan geyser, etc.
The potential difference between the two electrodes and as soon as the switch is in the on position the electrodes the electrons follows from negative to positive electrode.. The direction of current flow is opposite to that of electron flow.
The potential difference between the two electrodes of a galvanic cell is called the cell potential. The unit of cell potential is volts.
The cell potential is the difference between the electrode potentials of the cathode and anode.
This is said to be the cell Electromotive Force. It is generally denoted by emf. The unit of emf is volts.
The emf of the cell is positive. It is equal to potential of the half cell on the right hand side minus the potential of the half cell on left hand side.
Ecell = Eright - Eleft
Continue ..............................................
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