A solution of concentration $C g$ equiv/L has a specific resistance $R$. The equivalent conductance of the…

A solution of concentration $C g$ equiv/L has a specific resistance $R$. The equivalent conductance of the solution is
  1. $\frac{R}{C}$
  2. $\frac{C}{R}$
  3. $\frac{1000}{R C}$
  4. $\frac{1000 R}{C}$

Solution

Equivalent conductivity, $\wedge_{\mathrm{eq}}=\frac{\text { specific conductance } \times 1000}{\text { concentration }(\text { in g equiv } / \mathrm{L})}$ $\because$ Specific conductance $=\frac{1}{\text { specific resistance }}$ (Given, concentration $=C$ g equiv $/ \mathrm{L})$ $\therefore \quad \wedge_{\mathrm{eq}}=\frac{1}{R} \times \frac{1000}{C}$ or $\quad=\frac{1000}{R C}$

Asked in: AP EAMCET 2010

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