Question

Two solution of X and Y electrolytes are taken in two beakers and diluted by adding 500 mL of water. $\Delta_{m}$ of X increase by $1.5$ times while that of Y increase by 20 times what could be the electrolytes X and Y?

• A. X $\rightarrow$NaCl, Y $\rightarrow$KCl
• B. X $\rightarrow$ NaCl, Y $\rightarrow$ $CH_{3}COOH$
• C. X $\rightarrow$ KOH, Y $\rightarrow$ NaOH
• D. X $\rightarrow$ $CH_{3}COOH,$ Y $\rightarrow$NaCl

Answer 1

Answer: (B)

X $\rightarrow$ NaCl, Y $\rightarrow$ $CH_{3}COOH$

Answer 2

Electrolyte X is strong electrolyte as on dilution the number of ions remain same only interionic attraction decrease and hence not much increase in $\Delta_{m}$is seen while $\Delta_{m}$for a weak electrolyte increase significantly.