The molar conductivity of a weak electrolyte when plotted against the square root of its concentration, which of the following is expected to be observed?
(1) A small decrease in molar conductivity is observed at infinite dilution.
(2) A small increase in molar conductivity is observed at infinite dilution.
(3) Molar conductivity increases sharply with increase in concentration.
(4) Molar conductivity decreases sharply with increase in concentration.
