The conductivity of centimolar solution of KCl at 25°C is 0.0210 ohm–1 cm–1 and the resistance of the cell containing the solution at 25°C is 60 ohm. The value of the cell constant is:
 1 3.34 cm–1 2 1.34 cm–1 3 3.28 cm–1 4 1.26 cm–1
Subtopic:  Conductance & Conductivity |
77%
From NCERT
NEET - 2023
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The molar conductance of an electrolyte increases with dilution according to the equation:
$$\Lambda_{\mathrm{m}}=\Lambda_{\mathrm{m}}^{\circ}-\mathrm{A} \sqrt{\mathrm{c}}$$
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
Subtopic:  Conductance & Conductivity |
55%
From NCERT
NEET - 2023
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The molar conductance of a solution, given its conductivity (0.248 S m–1) and concentration (0.2 mol m–3) is:
1. 0.124 S cm2 mol–1
2. 1.24 S mmol–1
3. 124 S cm2 mol–1
4. 124 S m2 mol–1
Subtopic:  Conductance & Conductivity |
From NCERT
NEET - 2023
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$$\land^o_m$$ for NaCl, HCl and $$\mathrm{CH_3COONa }$$ are 126.4, 425.9, and 91.05 S cm2 mol–1 respectively. If the conductivity of 0.001028 mol L–1 acetic acid solution is $$4.95 \times 10^{-5} S ~cm^{-1}$$, the degree of dissociation of the acetic acid solution is:

 1 0.01233 2 1 3 0.1233 4 1.233
Subtopic:  Conductance & Conductivity |
56%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Limiting molar conductivities, for the given solutions, are :

$mo{l}^{-1}$

$mo{l}^{-1}$

$mo{l}^{-1}$

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 $$\mathrm{{(x-y) \over 2}+z}$$
Subtopic:  Conductance & Conductivity |
69%
From NCERT
NEET - 2019
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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