Question

The charge on cation and anion of an electrolyte is $v^{+}$ and $v^{-}$ respectively. One molecule of electrolyte furnishes 'c' cation and 'a' anions. Which expression is not correct?

• A. ${\lambda }_M={\lambda }_{eq.}\times (v^{+}\times c)$
• B. ${\lambda }_M={\lambda }_{eq.}\times (v^{-}\times a)$
• C. ${\lambda }_M={\lambda }_{eq.}\times v^{+}$
• D. ${\lambda }_M={\lambda }_{eq.}\times$ total charge on cation or anion

Answer 1

Answer: (C)

${\lambda }_M={\lambda }_{eq.}\times v^{+}$

The expression ${\lambda }_M={\lambda }_{eq.}\times v^{+}$ is not correct.

However, the expressions ${\lambda }_M={\lambda }_{eq.}\times (v^{+}\times C)$, ${\lambda }_M={\lambda }_{eq.}\times (v^{-}\times a)$ and ${\lambda }_M={\lambda }_{eq.}\times$ total charge on cation or anion are correct.

This is because, the total charge on the cation or the total charge on the anion is equal to $(v^{+}\times c)$ or $(v^{-}\times a)$.