Question

For a dilute solution of a strong electrolyte, the variation of molar conductivity with concentration is given by:

• A. ${\Lambda }_m={\Lambda }_m^{\circ }+Ac$
• B. ${\Lambda }_m={\Lambda }_m^{\circ }-Ac$
• C. ${\Lambda }_m={\Lambda }_m^{\circ }+A\sqrt{c}$
• D. ${\Lambda }_m={\Lambda }_m^{\circ }-A\sqrt{c}$

Answer 1

The correct option is D ${\Lambda }_m={\Lambda }_m^{\circ }-A\sqrt{c}$

${\Lambda }_m={\lambda }_m^{\circ }-A\sqrt{2}$ (Debye-Huckle Onsager equation)
${\Lambda }_m={\Lambda }_m^{\circ }-A\sqrt{c}$ (Debye-Huckle Onsagar equation)