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Arrhenius Acid

Consider the ...

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Consider the following statements : (i) With increase in dilution, molar conductance of a weak electrolyte solution increases whereas specific conductance decreases due to decrease in interionic attractions (ii) ∧m∞ for AgCl can be determined by extrapolation of the graph between ∧m and C (iii) For weak electrolytes, ∧m or ∧eq increases rapidly with dilution in the lower concentration range. Choose the correct statement (s) (1) I, II, III (2) only III (3) I, II (4) II, III

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Q. Consider the following statements.
(i) Molar conductance of

H^{+}

is much higher than those of other ions
(ii) Equivalent conductivity and molar conductivity increase with dilution
(iii) Specific conductivity decreases with dilution
(iv) Conductance

K^{+} < N a^{+} < L i^{+}

in water
Identify the correct statement.

Q. Match the physical quantities of an electrolyte given in Column-I with their properties given in Column-II and select the correct answer using the code given below :

	Column I		Column II
(P)	Specific conductance	(1)	Increases with dilution
(Q)	Molar conductance	(2)	Decreases with dilution
(R)	Degree of dissociation $(α)$	(3)	Increases on increasing the distance between the plates
(S)	Resistance	(4)	Decreases with increasing the conc. of electrolyte
		(5)	Siemen $m^{2} m o l^{- 1}$

Q. Assertion :Molar conductivity increases with decrease in concentration for weak electrolytes. Reason: No. of ions increases and no. of ions per unit volume decreases due to dilution.

Q. Assertion :Statement-I : Molar conductivity of a weak electrolyte at infinite dilution cannot be determined experimentally. Reason: Statement-II : Kohlrausch law help to find the molar conductivity of a weak electrolyte at infinite dilution.

Q. Assertion :Conductivity of weak electrolytic solution decreases with dilution whereas equivalent conductivity, molar conductivity increases with dilution. Reason: On dilution, the ionic mobility and number of ions present in solution increases but the number of ions per mL decreases.

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