JEE Main 2022 Chemistry question
Resistance of a conductivity cell (cell constant 129 ) filled with 74.5 ppm solution of KCl is 100 (labelled as solution 1). When the same cell is filled with KCl solution of 149 ppm, the resistance is 50 (labelled as solution 2). The ratio of molar conductivity of solution 1 and solution 2 i.e. . The value of x is . (Nearest integer) Given, molar mass of KCl is 74.5 g
Answer: 1000
Solution
The conductivity constant)/R, so . The concentration of solution 2 is twice that of solution 1,
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