Chapter 16: Problem 4
Kohlrausch's law can be used to determine (a) \(\lambda_{\infty}\) for weak electrolyte (b) absolute ionic mobilities (c) solubility of a sparingly soluble salt (d) all of these
Chapter 16: Problem 4
Kohlrausch's law can be used to determine (a) \(\lambda_{\infty}\) for weak electrolyte (b) absolute ionic mobilities (c) solubility of a sparingly soluble salt (d) all of these
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Get started for freeWhich of the following postulatales of Debye-Huckel theory is/are true? (a) The strong electrolyte is completely ionised at all dilutions. (b) The oppositely changed ions are completely distributed in the solution but the cations tend to be found in the vicinity of anions and vice versa. (c) Decrease in equivalent conductance with increase in concentration is due to fall in mobilities of ions due to inter-ionic effect. (d) All of the above.
The equivalent conductance at infinite dilution of \(\mathrm{NaCl}\), \(\mathrm{HCl}\) and \(\mathrm{CH}_{3} \mathrm{COONa}\) at \(25^{\circ} \mathrm{C}\) are \(126.0\), \(426.0\) and \(91.0 \mathrm{ohm}^{-1} \mathrm{~cm}^{2}\) respectively. The equivalent conductance of acetic acid at infinite dilution at \(25^{\circ} \mathrm{C}\) will be (a) \(643.0\) (b) \(517.0\) (c) \(217.0\) (d) \(391.0\)
When a strong acid is titrated against a strong base, the end point is the point of (a) zero conductance (b) maximum conductance (c) minimum conductance (d) none of these.
Kohlrasch's law can be expressed as (a) \(\lambda_{\infty}=\lambda_{a}-\lambda_{c}\) (b) \(\lambda_{\infty}=\lambda_{c}-\lambda_{a}\) (c) \(\lambda_{\infty}=\lambda_{a}+\lambda_{c}\) (d) \(\lambda_{\infty}=\lambda_{c}+\lambda_{a}\)
On passing electrical current through an electrolyte solution, the cations (a) move towards cathode with speed equal to that of anions towards anode (b) move with faster speed than that of anions (c) move with different speed as compared to that of anions (d) move with slower speed than that of anions
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