Chemistry Regent Exam August 2022
26. As more NaCl(s) is dissolved in a dilute, unsaturated NaCl(aq) solution, the conductivity of the solution (1) decreases as the ion concentration decreases
(2) decreases as the ion concentration increases
(3) increases as the ion concentration decreases
(4) increases as the ion concentration increases
Explanation: When more solute is dissolved, the concentration of the solution should increase (molarity = moles of solute/ liters of solution). NaCl is an ionic compound that dissociates into ions, which makes the solution capable of conducting electricity. As more NaCl is added, more ions are produced which in turn increases the conductivity of the solution.