Introduction
A Voltaic Cell (also known as a Galvanic Cell) is an electrochemical cell that uses spontaneous redo reactions to generate electricity. It consists of two separate half-cells. A half-cell is composed of an electrode (a strip of metal, M) within a solution containing Mn+ ions in which M is any arbitrary metal. The two half cells are linked together by a wire running from one electrode to the other. A salt bridge also connects to the half cells.
Through electrochemically, these reactions are reacting upon metal surfaces or electrodes.
An oxidation-reduction equilibrium is established twine the metal and the substances in solution. When electrodes are immersed in a solution containing ions of the same metal, it is called a half-cell. Electrolytes are ions in solution, usually flui
...d, that conduct electricity through ionic conduction. Two possible interactions can occur between the metal atoms on the electrode and the ion solutions. .
Metal ion Mn+ from the solution may collide with the electrode, gaining "n" electrons from it, and convert to metal atoms. This means that the ions are reduced.
Metal atoms on the surface may lose "n" electrons to the electrode ND enter the solution as the ion Mn+ meaning that the metal atoms are oxidized. When an electrode is oxidized In a solution, it is called an anode, and when an electrode is reduced in solution.
It Is called a cathode. LA voltaic cell Research Question: What Is the effect of decreasing the activity of the metal pairs used with Cue to make a voltaic cell, on the voltage of the cell when room temperature, 18. 0; C, room pressure, 1068 hap, molarities and volume of
electrolytes used, MM - 50 ml, the surface area of electrodes, CM x CM, and type of salt bridge, KOCH, Is kept constant In each trial?
Aim: The alma of this Investigation Is to determine the effect of the activity of metal pairs by changing the electrodes used on a half cell and keeping the other constant, Cue, under the same conditions throughout the experiment. Hypothesis: As the activity of electrodes decreases, the voltage of the voltaic cell also decrease. Variables Independent Variable: Type of electrode used (activity) Dependent Variable: The voltage of the voltaic cell Controlled Variables: Temperature of the room (solutions) Walt appear. Minutes until the temperature of solutions are equal to room temperature which IS 18.0;C.
Molarities and volume of electrolyte M, 50 ml electrolytes will be used. The volume will be measured by a graduated cylinder 6 CM x 3 CM electrodes will be used. Same beakers will be used within the voltaic cell and throughout the experiment. An atmospheric pressure Experiment will be held at the room with a pressure of 1068 hap KOCH will be used as a salt bridge.
The length of the salt bridge will be the same in all trials, 15 CM. The same voltmeter will be used in all trials.
- Organic Chemistry essays
- Acid essays
- Calcium essays
- Chemical Bond essays
- Chemical Reaction essays
- Chromatography essays
- Ethanol essays
- Hydrogen essays
- Periodic Table essays
- Titration essays
- Chemical reactions essays
- Osmosis essays
- Carbohydrate essays
- Carbon essays
- Ph essays
- Diffusion essays
- Copper essays
- Salt essays
- Concentration essays
- Sodium essays
- Distillation essays
- Amylase essays
- Magnesium essays
- Acid Rain essays
- Agriculture essays
- Albert einstein essays
- Animals essays
- Archaeology essays
- Bear essays
- Biology essays
- Birds essays
- Butterfly essays
- Cat essays
- Charles Darwin essays
- Chemistry essays
- Dinosaur essays
- Discovery essays
- Dolphin essays
- Elephant essays
- Eli Whitney essays
- Environmental Science essays
- Evolution essays
- Fish essays
- Genetics essays
- Horse essays
- Human Evolution essays
- Isaac Newton essays
- Journal essays
- Linguistics essays
- Lion essays
