Electrolyte Conductivity Quiz

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Given specific conductance $K$, resistance $R$, distance between electrodes $l$, and cross-sectional area $A$, what is the formula for specific resistance?

$1000K$
$\frac{l}{1000KA}$
$\frac{1}{1000K}$
$\frac{1}{K}$ (correct)

In the formula for specific conductance ($\kappa = x \cdot R$), what does 'x' represent?

$\frac{l}{A}$ (correct)
$\frac{1}{A}$
$\frac{1}{RA}$
$1$

What is the correct formula for calculating molar conductivity ($\Lambda_m$) given specific conductance ($K$) and concentration ($C$)?

$\frac{1000K}{C^2}$
$\frac{1000K}{C}$ (correct)
$\frac{K}{C}$
$1000\frac{KC}{C^2}$

Which of the following represents the cell constant?

$l/A$ (A) Signup and view all the answers

For an electrolyte, such as NaCl, where the velocities of the cation ($v_+$) and anion ($v_-$) are approximately equal, what can be said about their molar conductivities at infinite dilution?

$\lambda_+ \approx \lambda_-$ (A) Signup and view all the answers

Which of the following substances does NOT conduct electricity?

$NaCl$ (s) (B) Signup and view all the answers

Which factor, when multiplied by the resistance of a solution, yields the cell constant?

Specific conductance (B) Signup and view all the answers

Why does the equivalent conductance of an electrolyte solution generally increase upon dilution?

Increase in ionisation of electrolyte (C) Signup and view all the answers

Specific resistance

The reciprocal of specific conductance (K) and is a measure of the resistance of the electrolyte solution to the flow of electricity.

Equivalent Conductance (Λeq)

The ratio of the specific conductance (K) of a solution to its concentration in gram equivalents per liter (C).

Cell Constant

A constant that relates the specific conductance of an electrolyte to the observed conductance of the solution, calculated as the ratio of the distance between electrodes (l) to the cross-sectional area (A).

Specific Conductance (K)

A measure of a material's ability to conduct electricity, expressed as the inverse of its resistance. In electrolytes, it's calculated as K = (1/R) * (l/A), where R is resistance, l is distance between electrodes, and A is cross-sectional area.