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प्रश्न
How can you determine limiting molar conductivity, 0 m for strong electrolyte and weak electrolyte?
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उत्तर
For strong electrolyte, plot of m
against c, extrapolated to the y-axis, gives the value of m for
strong electrolyte. For weak electrolyte, intercept is not obtained as o m
cannot be extra apolated to zero conc. hence limiting molar conductivity of weak electrolyte is obtained from that of strong electrolytes. Using Kohlrausch law of independent migration of ions.
`λ_m^0(CH_3COOH) = lamda^0CH_3COONa + lamda_{HCl}^circ - lamda_{NaCl}^circ`
`lamda_m^circ(CH_3COOH) = lamda_{CH_3COO-}^circ + lamda_{H^+}^circ`
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संबंधित प्रश्न
Define limiting molar conductivity.
Why does the conductivity of a solution decrease with dilution?
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
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Molar conductivity of ionic solution depends on:
(i) temperature.
(ii) distance between electrodes.
(iii) concentration of electrolytes in solution.
(iv) surface area of electrodes.
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Reason: Zinc is less reactive than copper.
An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to :-
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`λ°_("HCOO"^-) = 50.5 " ohm"^-1 "cm"^2 "mol"^-1`
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.
