Question
Two solutions of $$X$$ and $$Y$$ electrolytes are taken in two beakers and diluted by adding $$500\,mL$$ of water. $${ \wedge _m}$$ of $$X$$ increases by 1.5 times while that of $$Y$$ increases by 20 times, what could be the electrolytes $$X$$ and $$Y?$$
A.
$$X \to NaCl,Y \to KCl$$
B.
$$X \to NaCl,Y \to C{H_3}COOH$$
C.
$$X \to KOH,Y \to NaOH$$
D.
$$X \to C{H_3}COOH,Y \to NaCl$$
Answer :
$$X \to NaCl,Y \to C{H_3}COOH$$
Solution :
Electrolyte $$X$$ is strong electrolyte as on dilution the number of ions remain same, only interionic attraction decreases and hence not much increase in $${ \wedge _m}$$ is seen. While $${ \wedge _m}$$ for a weak electrolyte increases significantly.