04. Conductance and Conductor
ELECTROCHEMISTRY

276139 If an electrolytic solution has specific resistance $x$ and $y$ is the molarity of that solution, then molar conductance $\left(\lambda_{m}\right)$ of that solution will be

1 $\frac{1000 y}{x}$
2 $\frac{1000 x}{\mathrm{y}}$
3 $\frac{1000}{\mathrm{xy}}$
4 $\frac{x y}{1000}$
ELECTROCHEMISTRY

276140 Given below are two statements.
Statement I : The limiting molar conductivity of $\mathrm{KCl}$ (strong electrolyte) is higher compared to that of $\mathrm{CH}_{3} \mathrm{COOH}$ (weak electrolyte)
Statement II : Molar conductivity decreases with decrease in concentration of electrolyte. In the light of the above statements, choose the most appropriate answer from the options given below

1 Statement I is true but statement II is false.
2 Statement I is false but statement II is true.
3 Both statement I and statement II are true.
4 Both statement I and statement II are false.
ELECTROCHEMISTRY

276141 The resistance of $0.01 \mathrm{~m} \mathrm{KCl}$ solution at $298 \mathrm{~K}$ is $1500 \Omega$. It is the conductivity of $0.01 \mathrm{~m} \mathrm{KCl}$ solution at $298 \mathrm{~K}$ is $0.1466 \times 10^{-3} \mathrm{~S} \mathrm{~cm}^{-1}$. The cell constant of the conductivity cell in $\mathrm{cm}^{-1}$ is

1 0.219
2 0.291
3 0.301
4 0.194
ELECTROCHEMISTRY

276143 The molar conductivity of $0.007 \mathrm{M}$ acetic acid is $20 \mathrm{~S} \mathrm{~cm} \mathrm{~mol}^{-1}$. What is the dissociation constant of acetic acid? Choose the correct option.
$\begin{array}{l}
\Lambda_{\mathrm{H}^{+}}^{\circ}=350 \mathrm{Scm}^{2} \mathrm{~mol}^{-1} \\
\Lambda_{\mathrm{CH}_{3} \mathrm{COO}^{-}}^{\circ}=50 \mathrm{Scm}^{2} \mathrm{~mol}^{-1}
\end{array}$

1 $2.50 \times 10^{5} \mathrm{~mol} \mathrm{~L}^{-1}$
2 $1.75 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$
3 $2.50 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$
4 $1.75 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1}$
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
ELECTROCHEMISTRY

276139 If an electrolytic solution has specific resistance $x$ and $y$ is the molarity of that solution, then molar conductance $\left(\lambda_{m}\right)$ of that solution will be

1 $\frac{1000 y}{x}$
2 $\frac{1000 x}{\mathrm{y}}$
3 $\frac{1000}{\mathrm{xy}}$
4 $\frac{x y}{1000}$
ELECTROCHEMISTRY

276140 Given below are two statements.
Statement I : The limiting molar conductivity of $\mathrm{KCl}$ (strong electrolyte) is higher compared to that of $\mathrm{CH}_{3} \mathrm{COOH}$ (weak electrolyte)
Statement II : Molar conductivity decreases with decrease in concentration of electrolyte. In the light of the above statements, choose the most appropriate answer from the options given below

1 Statement I is true but statement II is false.
2 Statement I is false but statement II is true.
3 Both statement I and statement II are true.
4 Both statement I and statement II are false.
ELECTROCHEMISTRY

276141 The resistance of $0.01 \mathrm{~m} \mathrm{KCl}$ solution at $298 \mathrm{~K}$ is $1500 \Omega$. It is the conductivity of $0.01 \mathrm{~m} \mathrm{KCl}$ solution at $298 \mathrm{~K}$ is $0.1466 \times 10^{-3} \mathrm{~S} \mathrm{~cm}^{-1}$. The cell constant of the conductivity cell in $\mathrm{cm}^{-1}$ is

1 0.219
2 0.291
3 0.301
4 0.194
ELECTROCHEMISTRY

276143 The molar conductivity of $0.007 \mathrm{M}$ acetic acid is $20 \mathrm{~S} \mathrm{~cm} \mathrm{~mol}^{-1}$. What is the dissociation constant of acetic acid? Choose the correct option.
$\begin{array}{l}
\Lambda_{\mathrm{H}^{+}}^{\circ}=350 \mathrm{Scm}^{2} \mathrm{~mol}^{-1} \\
\Lambda_{\mathrm{CH}_{3} \mathrm{COO}^{-}}^{\circ}=50 \mathrm{Scm}^{2} \mathrm{~mol}^{-1}
\end{array}$

1 $2.50 \times 10^{5} \mathrm{~mol} \mathrm{~L}^{-1}$
2 $1.75 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$
3 $2.50 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$
4 $1.75 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1}$
ELECTROCHEMISTRY

276139 If an electrolytic solution has specific resistance $x$ and $y$ is the molarity of that solution, then molar conductance $\left(\lambda_{m}\right)$ of that solution will be

1 $\frac{1000 y}{x}$
2 $\frac{1000 x}{\mathrm{y}}$
3 $\frac{1000}{\mathrm{xy}}$
4 $\frac{x y}{1000}$
ELECTROCHEMISTRY

276140 Given below are two statements.
Statement I : The limiting molar conductivity of $\mathrm{KCl}$ (strong electrolyte) is higher compared to that of $\mathrm{CH}_{3} \mathrm{COOH}$ (weak electrolyte)
Statement II : Molar conductivity decreases with decrease in concentration of electrolyte. In the light of the above statements, choose the most appropriate answer from the options given below

1 Statement I is true but statement II is false.
2 Statement I is false but statement II is true.
3 Both statement I and statement II are true.
4 Both statement I and statement II are false.
ELECTROCHEMISTRY

276141 The resistance of $0.01 \mathrm{~m} \mathrm{KCl}$ solution at $298 \mathrm{~K}$ is $1500 \Omega$. It is the conductivity of $0.01 \mathrm{~m} \mathrm{KCl}$ solution at $298 \mathrm{~K}$ is $0.1466 \times 10^{-3} \mathrm{~S} \mathrm{~cm}^{-1}$. The cell constant of the conductivity cell in $\mathrm{cm}^{-1}$ is

1 0.219
2 0.291
3 0.301
4 0.194
ELECTROCHEMISTRY

276143 The molar conductivity of $0.007 \mathrm{M}$ acetic acid is $20 \mathrm{~S} \mathrm{~cm} \mathrm{~mol}^{-1}$. What is the dissociation constant of acetic acid? Choose the correct option.
$\begin{array}{l}
\Lambda_{\mathrm{H}^{+}}^{\circ}=350 \mathrm{Scm}^{2} \mathrm{~mol}^{-1} \\
\Lambda_{\mathrm{CH}_{3} \mathrm{COO}^{-}}^{\circ}=50 \mathrm{Scm}^{2} \mathrm{~mol}^{-1}
\end{array}$

1 $2.50 \times 10^{5} \mathrm{~mol} \mathrm{~L}^{-1}$
2 $1.75 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$
3 $2.50 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$
4 $1.75 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1}$
ELECTROCHEMISTRY

276139 If an electrolytic solution has specific resistance $x$ and $y$ is the molarity of that solution, then molar conductance $\left(\lambda_{m}\right)$ of that solution will be

1 $\frac{1000 y}{x}$
2 $\frac{1000 x}{\mathrm{y}}$
3 $\frac{1000}{\mathrm{xy}}$
4 $\frac{x y}{1000}$
ELECTROCHEMISTRY

276140 Given below are two statements.
Statement I : The limiting molar conductivity of $\mathrm{KCl}$ (strong electrolyte) is higher compared to that of $\mathrm{CH}_{3} \mathrm{COOH}$ (weak electrolyte)
Statement II : Molar conductivity decreases with decrease in concentration of electrolyte. In the light of the above statements, choose the most appropriate answer from the options given below

1 Statement I is true but statement II is false.
2 Statement I is false but statement II is true.
3 Both statement I and statement II are true.
4 Both statement I and statement II are false.
ELECTROCHEMISTRY

276141 The resistance of $0.01 \mathrm{~m} \mathrm{KCl}$ solution at $298 \mathrm{~K}$ is $1500 \Omega$. It is the conductivity of $0.01 \mathrm{~m} \mathrm{KCl}$ solution at $298 \mathrm{~K}$ is $0.1466 \times 10^{-3} \mathrm{~S} \mathrm{~cm}^{-1}$. The cell constant of the conductivity cell in $\mathrm{cm}^{-1}$ is

1 0.219
2 0.291
3 0.301
4 0.194
ELECTROCHEMISTRY

276143 The molar conductivity of $0.007 \mathrm{M}$ acetic acid is $20 \mathrm{~S} \mathrm{~cm} \mathrm{~mol}^{-1}$. What is the dissociation constant of acetic acid? Choose the correct option.
$\begin{array}{l}
\Lambda_{\mathrm{H}^{+}}^{\circ}=350 \mathrm{Scm}^{2} \mathrm{~mol}^{-1} \\
\Lambda_{\mathrm{CH}_{3} \mathrm{COO}^{-}}^{\circ}=50 \mathrm{Scm}^{2} \mathrm{~mol}^{-1}
\end{array}$

1 $2.50 \times 10^{5} \mathrm{~mol} \mathrm{~L}^{-1}$
2 $1.75 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$
3 $2.50 \times 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$
4 $1.75 \times 10^{-5} \mathrm{~mol} \mathrm{~L}^{-1}$