Q. No.The specific conductivity of a solution depends upon :
1. Number of ions as well as mobility of ions.
2. Number of ions per cc or (cm3) of solution.
3. Number of ions per cc or (cm3) as well as mobilities of ions.
4. Mobilities of ions.
The incorrect statement about the solution of electrolytes is:
| 1. | Conductivity of solution depends upon the size of ions. |
| 2. | Conductivity depends upon the viscosity of solution. |
| 3. | Conductivity does not depend upon the solvation of ions present in solution. |
| 4. | Conductivity of solution increases with temperature. |
Which of the following statements is correct regarding the cell constant of a conductivity cell?
| 1. | Changes with the change of electrolyte. |
| 2. | Changes with the change of concentration of electrolyte. |
| 3. | Changes with the temperature of the electrolyte. |
| 4. | Remains constant for a cell. |
The specific conductance of a 0.1 M KCl solution at 23 is 0.012 .
The resistance of the cell containing the solution at the same temperature was found to be 55 . The cell constant will be:
1. 0.142 cm–1
2. 0.66 cm–1
3. 0.918 cm–1
4. 1.12 cm–1
The specific conductivity of a saturated solution of KI3 is 4.59 × 10-6 ohm-1 cm-1 and it's molar conductance is 1.53 ohm-1 cm2 mol-1. The Ksp Of KI3 will be :
1. 4 x 10-12
2. 27 x 27 x 10-9
3. 9 x 10-6
4. 4 x 10-6
The molar conductivity of a 0.5 mol/dm3 solution of AgNO3 with electrolytic conductivity of 5.76 × 10–3 S cm–1 at 298 K is:
| 1. | 11.5 S cm2/mol | 2. | 21.5 S cm2/mol |
| 3. | 31.5 S cm2/mol | 4. | 41.5 S cm2/mol |
The incorrect statement(s) among the following is/are:
| (a) | The unit of conductivity is S cm–2. |
| (b) | Specific Conductivity of weak and strong electrolytes always decreases with a decrease in concentration. |
| (c) | The unit of molar conductivity is S cm2 mol–1. |
| (d) | Molar conductivity increases with an increase in concentration. |
1. Only (a)
2. (a) and (d)
3. (b) and (d)
4. (a) and (c)
Consider the following graph.
The strong electrolyte in the above graph is represented by:
1. X
2. Y
3. Both X and Y
4. Data given is not sufficient to predict.
\(\Lambda_{\mathrm{m}}=\Lambda_{\mathrm{m}}^{\circ}-\mathrm{A} \sqrt{\mathrm{c}} \)
Consider the following four statements:
| A: | This equation applies to both strong and weak electrolytes |
| B: | The value of the constant A depends upon the nature of the solvent |
| C: | The value of constant A is the same for both \(BaCl_2\) and \(MgSO_4\) |
| D: | The value of constant A is the same for both \(BaCl_2\) and \(Mg(OH)_2\) |
Which of the above statements are correct?
| 1. | (A) and (B) only | 2. | (A), (B), and (C) only |
| 3. | (B) and (C) only | 4. | (B) and (D) only |
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