The sequence of ionic mobility in aqueous sol | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) In an aqueous solution,ions are hydrated. The smaller the size of the bare ion,the greater is the degree of hydration because the charge density i

Vedclass · Accepted Answer

$Cs^{+} > Rb^{+} > K^{+} > Na^{+}$

Vedclass · Answer

(D) In an aqueous solution,ions are hydrated. The smaller the size of the bare ion,the greater is the degree of hydration because the charge density is higher. Thus,the degree of hydration is highest for $Li^{+}$ and lowest for $Cs^{+}$. Due to a larger hydration shell,the hydrated ion size becomes larger for ions with smaller bare radii. Consequently,$Cs^{+}$ has the smallest hydrated size and $Li^{+}$ has the largest hydrated size. Since ionic mobility is inversely proportional to the size of the hydrated ion,the mobility is highest for $Cs^{+}$ and lowest for $Li^{+}$. The correct order of ionic mobility in aqueous solution is $Cs^{+} > Rb^{+} > K^{+} > Na^{+} > Li^{+}$.

The sequence of ionic mobility in aqueous solution is

Similar Questions

The metallic lustre exhibited by sodium is explained by

Four reactions are given below:
$(i)$ $2Li + 2H_2O \to 2LiOH + H_2$
$(ii)$ $2Na + 2H_2O \to 2NaOH + H_2$
$(iii)$ $2LiNO_3 \xrightarrow{\text{Heat}} 2LiNO_2 + O_2$
$(iv)$ $2NaNO_3 \xrightarrow{\text{Heat}} 2NaNO_2 + O_2$
Which of the above,if any,is wrong?

Which of the following compounds release oxygen upon heating?

The $Cs^{+}$ ion imparts a violet color to the flame. This is due to the fact that the emitted radiation has .........

The word 'alkali' used for alkali metals indicates:

Vedclass Test Series

Exam Paper Generator

Online Exam Module