Specific Conductance and Conductivity Quiz

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Questions and Answers

What is the relationship between temperature and conductance according to the text?

  • A 1°C increase in temperature results in a 2% decrease in conductance
  • Temperature has no effect on conductance
  • Conductance is inversely proportional to temperature
  • A 1°C increase in temperature results in a 2% increase in conductance (correct)

Why is it preferred to dilute the solution when conducting conductometric determinations?

  • In high concentration electrolytes, the ions may not move freely due to interionic attractive forces, resulting in a non-linear relationship between conductance and concentration (correct)
  • To increase the distance between the electrodes
  • To decrease the activity coefficient
  • To increase the activity of the ions

What is the relationship between the conductance of an electrolyte (G) and the surface area of the electrodes (A) according to the text?

  • G is directly proportional to A (correct)
  • G is inversely proportional to A
  • G is proportional to the square root of A
  • G is independent of A

What is the relationship between the conductance of an electrolyte (G) and the distance between the electrodes (L) according to the text?

<p>G is inversely proportional to L (A)</p> Signup and view all the answers

What is the formula for the relationship between conductance (G), electrode area (A), and electrode distance (L) according to the text?

<p>G = K * A / L (D)</p> Signup and view all the answers

What is the definition of the activity coefficient (Fa) according to the text?

<p>Fa = a / C (D)</p> Signup and view all the answers

What happens to the activity coefficient (Fa) as the concentration of the solution increases?

<p>Fa decreases (D)</p> Signup and view all the answers

What is the unit of conductance (G) according to the information provided in the text?

<p>Siemens (A)</p> Signup and view all the answers

According to Ohm's law, what is the relationship between current (I), voltage (V), and resistance (R)?

<p>I = V / R (A)</p> Signup and view all the answers

What is the main advantage of conducting conductometric determinations under thermostatically controlled conditions according to the text?

<p>To ensure the ions move freely and the relationship between conductance and concentration remains linear (C)</p> Signup and view all the answers

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