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
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The for a 0.00099 M solution. The reciprocal of the degree of dissociation of acetic acid, if for acetic acid is 400 S will be:
1. | 7 | 2. | 8 |
3. | 9 | 4. | 10 |
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The conductivity of 0.20 M solution of KCl at 298 K is 0.0248 S cm–1. The molar conductivity will be -
1. | 124 S cm2 mol-1 | 2. | 134 S cm2 mol-1 |
3. | 128 S cm2 mol-1 | 4. | 136 S cm2 mol-1 |
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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
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The unit of specific conductance is:
1. | ohm-1 cm-1 | 2. | ohm cm |
3. | ohm cm-1 | 4. | ohm-1 cm |
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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. |
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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.
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At 25 °C molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 Ω-1 cm2 mol-1 and at infinite dilution its molar conductance is 238 Ω-1 cm2 mol-1. The degree of ionisation of ammonium hydroxide at the same concentration and temperature is :
1. | 2.080 % | 2. | 20.800 % |
3. | 4.008 % | 4. | 40.800 % |
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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. |
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Limiting molar conductivities, for the given solutions, are :
From the data given above, it can be concluded that \(\lambda_m^0 \) in (\(S\ cm^2\ mol^{-1}\)) for CH3COOH will be :
1. | \(\mathrm{x-y+2z}\) | 2. | \(\mathrm{x+y+z}\) |
3. | \(\mathrm{x-y+z}\) | 4. | \(\mathrm{{(x-y) \over 2}+z}\) |
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