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Questions and Answers
Which instrument is used for the measurement of conductance?
Which instrument is used for the measurement of conductance?
- Voltmeter
- Wheatstone bridge circuit
- Ohmmeter
- Conductivity cells (correct)
What does Ohm's law state?
What does Ohm's law state?
- Resistance is directly proportional to area and inversely proportional to length.
- Conductivity is inversely proportional to resistance.
- Specific conductance is the inverse of specific resistance.
- Current is directly proportional to potential difference. (correct)
What happens to the current if the potential difference across a conductor is doubled?
What happens to the current if the potential difference across a conductor is doubled?
- The current remains the same
- The current quadruples
- The current is halved
- The current doubles (correct)
What is specific conductance also known as?
What is specific conductance also known as?
What is the principle behind conductometric titration?
What is the principle behind conductometric titration?
What is used to determine the end point in conductometric titration?
What is used to determine the end point in conductometric titration?
What type of electrodes are used in conductometric titration?
What type of electrodes are used in conductometric titration?
What is the significance of the sharp change observed during conductometric titration?
What is the significance of the sharp change observed during conductometric titration?
What is the main purpose of conductometry?
What is the main purpose of conductometry?
What is the unit of measurement for conductance?
What is the unit of measurement for conductance?
What does conductance depend on in a solution?
What does conductance depend on in a solution?
In conductometry, what is responsible for the conductivity of a solution?
In conductometry, what is responsible for the conductivity of a solution?
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Study Notes
Measurement of Conductance
- A conductometer is used to measure conductance.
Ohm's Law
- Ohm's law states that the potential difference across a conductor is directly proportional to the current flowing through it.
Effect of Potential Difference on Current
- If the potential difference across a conductor is doubled, the current will also double.
Specific Conductance
- Specific conductance is also known as molar conductivity.
Conductometric Titration
- The principle behind conductometric titration is the measurement of the change in conductance of a solution during a titration reaction.
- The end point in conductometric titration is determined by a sharp change in the conductance graph.
- Ion-selective electrodes are typically used in conductometric titration.
Significance of Sharp Change
- The sharp change observed during conductometric titration indicates the completion of the titration reaction.
Purpose of Conductometry
- The main purpose of conductometry is to measure the ionic concentration of a solution.
Unit of Conductance
- The unit of measurement for conductance is Siemens (S).
Factors Affecting Conductance
- Conductance depends on the concentration of ions, temperature, and the nature of the solvent in a solution.
Conductivity of a Solution
- Ions are responsible for the conductivity of a solution in conductometry.
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