The variation of the molar conductivity with concentration of an electrolyte (X) in aqueous solution is shown in the given figure. The electrolyte ' X ' is:

Step-by-step solution

The graph shows the variation of molar conductivity ( _m ) with the square root of concentration ( c ). For strong electrolytes like NaCl , KCl , and HNO ₃ , the molar conductivity increases linearly with decreasing concentration according to the Kohlrausch equation: _m = _m^0 - A c . These electrolytes show a gradual increase in _m as concentration decreases, and they can be extrapolated to infinite dilution to find _m^0 . For weak electrolytes like CH ₃ COOH , the molar conductivity increases sharply as the conce