Conductance and Conductivity

Q.

What is the expression used to calculate the cell constant $G*$?

Q.

List the factors on which the resistance of a wire depends.

Q.

List the factors on which the resistance of a conductor depends.

Q. The correct order of equivalent conductance at infinite dilution for $LiCl$, $NaCl$, and $KCl$ would be:

1. $KCl>NaCl>LiCl$
2. $LiCl>NaCl>KCl$
3. $LiCl>KCl>NaCl$
4. $LiCl\cong NaCl>KCl$

Q.

reducing potential depends upon?

Q. Explain ionisation enthalpy .

Q. The resistance of a $0.2\text{M}$ solution of an electrolyte is $50\Omega$. The specific conductance of the solution is $1.4{\text{S m}}^{-1}$ .
The resistance of a $0.5\text{M}$ solution of the same electrolyte occupying the same volume is $280\Omega$. The molar conductivity of the above mentioned $0.5\text{M}$ solution of the electrolyte in ${\text{S m}}^2{\text{mol}}^{-1}$ is:

1. $5\times {10}^3$
2. $5\times {10}^2$
3. $5\times {10}^{-3}$
4. $5\times {10}^{-4}$

Q. State True or False?
Conductance is also dependent on the factors on which resistance is dependent

1. True
2. False

Q. When a solution of specific conductance $1.342{\text{Sm}}^{-1}$ was placed in a conductivity cell with parallel electrodes, the resistance was found to be $170.5\text{ohm}$. The area of the electrodes is $1.86\times {10}^{-4}{\text{m}}^2$ . Calculate the distance between the electrodes.

1. $0.0452\text{m}$
2. $0.425\text{m}$
3. $4.25\text{m}$
4. $42.5\text{m}$

Q. For the redox reaction, $Mn{O}_{4,}^{-}+C_2{O}_4^{2-}+H^{+}\to M{n}^{2+}+C{O}_2+H_{2}O$
the correct coefficients of the reactants for the balanced reaction are respectively $Mn{O}_{4,}^{-}+C_2{O}_4^{-}+H^{+}:$

1. $15,16,12$
2. $16,3,12$
3. $2,16,5$
4. $2,5,16$