Which one of the following ions has highest limiting molar conductivity ?

Question

Which one of the following ions has highest limiting molar conductivity ? (A) Na+ (B) Mg2+ (C) K+ (D) Ca2+

Tardigrade Admin · Accepted Answer

beginmatrixIon&Na+&K+&Mg+&Ca+ Lambda°m&50.70&73.50&106.0&119.0 endmatrix (S cm2 mol-1) The size of hydrated Na+ ion is largest and that of Ca2+ is the smallest. Hence they follow the above order.

Q. Which one of the following ions has highest limiting molar conductivity ?

$N a^{+}$

$M g^{2 +}$

$K^{+}$

$C a^{2 +}$

$I o n Λ_{m}^{\circ} N a^{+} 50.70 K^{+} 73.50 M g^{+} 106.0 C a^{+} 119.0$
$(S c m^{2} m o l^{- 1})$
The size of hydrated $N a^{+}$ ion is largest and that of $C a^{2 +}$ is the smallest. Hence they follow the above order.

Q. Which one of the following ions has highest limiting molar conductivity ?

Na+

Mg2+

K+

Ca2+

IonΛm∘​​Na+50.70​K+73.50​Mg+106.0​Ca+119.0​ (Scm2mol−1) The size of hydrated Na+ ion is largest and that of Ca2+ is the smallest. Hence they follow the above order.

$N a^{+}$

$M g^{2 +}$

$K^{+}$

$C a^{2 +}$

$I o n Λ_{m}^{\circ} N a^{+} 50.70 K^{+} 73.50 M g^{+} 106.0 C a^{+} 119.0$
$(S c m^{2} m o l^{- 1})$
The size of hydrated $N a^{+}$ ion is largest and that of $C a^{2 +}$ is the smallest. Hence they follow the above order.