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प्रश्न
Which of the following solutions of KCl will have the highest value of molar conductivity?
विकल्प
0.01 M
1 M
0.5 M
0.1 M
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उत्तर
0.01 M
Explanation:
The relationship between specific conductivity and molar conductivity is:
Molar conductivity, ∧m = `(κ xx 1000)/"c"` cm3L–1
From the above relation, ∧m is inversely proportional to the molarity of the solution.
Therefore, the lesser the value of molarity, the more will be the molar conductivity.
संबंधित प्रश्न
Define “Molar conductivity”.
The molar conductivity of cation and anion of salt BA are 180 and 220 mhos respectively. The molar conductivity of salt BA at infinite dilution is_____________ .
(a) 90 mhos.cm2
(b) 110 mhos.cm2.mol-1
(c) 200 mhos.cm2.mol-1
(d) 400 mhos.cm2.mol-1
Why conductivity of an electrolyte solution decreases with the decrease in concentration ?
Define the following terms: Molar conductivity (⋀m)
10.0 grams of caustic soda when dissolved in 250 cm3 of water, the resultant gram molarity of solution is _______.
(A) 0.25 M
(B) 0.5 M
(C) 1.0 M
(D) 0.1 M
Define the following terms :
Limiting molar conductivity
In the plot of molar conductivity (∧m) vs square root of concentration (c1/2), following curves are obtained for two electrolytes A and B:
Answer the following:
(i) Predict the nature of electrolytes A and B.
(ii) What happens on extrapolation of ∧m to concentration approaching zero for electrolytes A and B?
The molar conductivity of 0.007 M acetic acid is 20 S cm2 mol−1. What is the dissociation constant of acetic acid? Choose the correct option.
\[\begin{array}{cc}
\end{array}\]\[\begin{bmatrix}
\ce{\Lambda^{\circ}_{H^+} = 350 S cm^2 mol^{-1}}\\
\ce{\Lambda^{\circ}_{CH_3COO^-} = 50 S cm^2 mol^{-1}}
\end{bmatrix}\]
The resistance of a conductivity cell with a 0.1 M KCl solution is 200 ohm. When the same cell is filled with a 0.02 M NaCl solution, the resistance is 1100 ohm. If the conductivity of 0.1 M KCl solution is 0.0129 ohm-1 cm-1, calculate the cell constant and molar conductivity of 0.02 M NaCl solution.
Suggest a way to determine the `∧_"m"^∘`value of water.
