Podcast
Questions and Answers
What is the meaning of the term 'specific conductance' or 'conductivity' denoted by the symbol K?
What is the meaning of the term 'specific conductance' or 'conductivity' denoted by the symbol K?
- The conductance when the length (L) is unity (1 cm) and the area (A) is unity (1 cm²) (correct)
- The conductance of a solution at a specific concentration and temperature
- The conductance of a cubic centimeter of liquid (1 cm³)
- The ratio of conductance to cell constant (L/A)
What is the relationship between the observed conductance (G), specific conductance (K), and the cell constant (L/A)?
What is the relationship between the observed conductance (G), specific conductance (K), and the cell constant (L/A)?
- G = (L/A) × K
- G = K × A / L (correct)
- G = K / (L/A)
- G = (L/A) / K
Why is it important to use platinum (Pt) electrodes in conductometric measurements?
Why is it important to use platinum (Pt) electrodes in conductometric measurements?
- Pt electrodes are more stable and do not undergo redox reactions (correct)
- Pt electrodes have a higher conductivity than other metals
- Pt electrodes are more sensitive to changes in conductance
- Pt electrodes are more widely available and cost-effective
Why are conductometric determinations carried out using alternating current (AC) instead of direct current (DC)?
Why are conductometric determinations carried out using alternating current (AC) instead of direct current (DC)?
Why are conductometric determinations typically carried out using diluted solutions?
Why are conductometric determinations typically carried out using diluted solutions?
What is the purpose of maintaining a constant cell constant (L/A) during conductometric determinations?
What is the purpose of maintaining a constant cell constant (L/A) during conductometric determinations?
Why are conductometric determinations typically carried out under thermostatically controlled conditions?
Why are conductometric determinations typically carried out under thermostatically controlled conditions?
What is the main advantage of using electrochemical methods of analysis, such as conductometry, over other analytical techniques?
What is the main advantage of using electrochemical methods of analysis, such as conductometry, over other analytical techniques?
Which of the following is not a key factor that affects the specific conductance (K) of a solution?
Which of the following is not a key factor that affects the specific conductance (K) of a solution?
What is the main reason for using solutions of known conductivity to determine the cell constant (L/A) of a conductometric measurement system?
What is the main reason for using solutions of known conductivity to determine the cell constant (L/A) of a conductometric measurement system?
How does the choice of cell constant (L/A) affect the conductometric measurements of solutions with different conductivity levels?
How does the choice of cell constant (L/A) affect the conductometric measurements of solutions with different conductivity levels?
