The molar conductivity ( _m ) of three different electrolytes is plotted against C . The resulting graph shows three distinct curves labeled P, Q, and R. Curves P and Q are straight lines with negative slopes, but the slope of Q is significantly steeper (more negative) than that of P. Curve R is non-linear, showing a steep asymptotic increase as concentration approaches zero. If the three electrolytes are KCl , MgSO

Step-by-step solution

Curve R represents a weak electrolyte because its molar conductivity increases steeply and non-linearly at low concentrations due to an increase in the degree of dissociation. Therefore, R corresponds to CH ₃ COOH . Curves P and Q represent strong electrolytes, which follow the Debye-Hückel-Onsager equation: _m = _m^ - A C . The magnitude of the slope, A , depends on the charges of the cation and anion (the valence type of the electrolyte). Electrolytes with higher charges have stronger interionic interactions, res