Solutions of two electrolytes A and B are diluted. The `Lambda_(m)` of 'B' increases 1.5 times while that of A increases 25 times. Which of the two is a strong electrolyte? Justify your answer.

Explanation

Strong electrolytes dissociate almost completely even on high concentration. Therefore concentration of such solutions remain almost same on dilutio. Electrolyte 'B' is stornger than 'A' because in 'B' the number of ions remains the same on dilution. but only interionic attraction decreases.
Therefore, `Lambda_(m)` increases only 1.5 times, while in case of weak electroyte on dilution, number of constituent ions increases.