Electrochemistry - Result Question 7
####8. Which of the following expressions correctly represents the equivalent conductance at infinite dilution of $Al_2(SO_4)_3$, ? Given that $\Lambda _{Al^{3+}}$ and
$\Lambda _{SO_4^{2-}}^{\circ}$ are the equivalent conductances at infinite dilution of the respective ions. [2010]
(a) $\frac{1}{3} \Lambda _{Al^{3+}}^{\circ}+\frac{1}{2} \Lambda _{SO_4^{2-}}^{\circ}$
(b) $2 \Lambda _{Al^{3+}}^{\circ}+3 \Lambda _{SO_4^{2-}}^{\circ}$
(c) $\Lambda _{Al^{3+}}^{\circ}+\Lambda _{SO_4^{2-}}^{\circ}$
(d) $(\Lambda _{Al^{3+}}^{\circ}+\Lambda _{SO_4^{2-}}^{\circ}) \times 6$
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Solution:
- (c) Equivalent conductance of an electrolyte at infinite dilution is given by the sum of equivalent conductances of the respective ions at infinite dilution.
