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Potentiometers work by having a resistive element inside. Both end terminals are attached to it, and do not move. The wiper travels along the strip when the knob is turned. The closer the wiper is to the end terminal it is wired in conjunction with, the less the resistance, because the path of the current will be shorter. The further away it moves from the terminal, the greater the resistance will be.
The symbol for a potentiometer is the same one as a resistor, save for an arrow in the middle. In a circuit where they are used strictly as variable resistors or rheostats, only two terminals are wired to the other components. All three terminals are wired separately when they function as voltage dividers. Light dimmers in houses and volume controls on electronics are two common applications. Others include switches and position sensors
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What is the use of platinum electrode in potentiometry titration?
Because it is not reacted in solution.
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Edmond Locard was the first person to apply principles of forensic science to a working crime laboratory. He applied what is called the Locard's exchange principle to a working crime laboratory.
What is the advantage of potentiometry?
Potentiometry is a field of electroanalytical chemistry in which the potential of a solution is measured with no current flow; there are many different methods of doing this and structures of potentiometers in existence. It is used to determine the concentration of different analyte ions in solution. This can have many practical applications; potentiometry is used to determine the end-point of titrations, the amount of fluoride in drinking water, and the pH of solutions, among many other things.
Is potentiometric titration superior to conductometric titration?
This is totally depending to WHAT KIND of analysis you are referring to. They could be of equal or of totally different value for one or another compound. Potentiometry is based on acid/base reactions and pH change at equivalence point, while conductometry is based in change of the (conductivity) behaviour of ions, also applicable to redox, precipitometric (argentometric) AND acid/base reactions.
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What is the use of platinum electrode in potentiometry titration?
Because it is not reacted in solution.
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Potentiometry is a field of electroanalytical chemistry in which the potential of a solution is measured with no current flow; there are many different methods of doing this and structures of potentiometers in existence. It is used to determine the concentration of different analyte ions in solution. This can have many practical applications; potentiometry is used to determine the end-point of titrations, the amount of fluoride in drinking water, and the pH of solutions, among many other things.
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