Identify the factor from the following that does not affect electrolytic conductance of a solution.

Solution

Chemistry ma’am · 2 steps

Conductance is about ions moving through the solution, so ask what controls the ions, not the metal plates.

1. What carries current. In an electrolytic solution the current is carried by ions moving through the liquid. So anything that changes how many ions there are, or how fast they move, changes the conductance.

   Factor	How it acts on the ions	Affects conductance?
   Nature of solvent	A solvent with a higher dielectric constant separates ions better, and a less viscous one lets them move faster	Yes
   Nature of electrolyte	A strong electrolyte gives more ions than a weak one, and ion size and charge change their speed	Yes
   Nature of electrode	The electrode only collects the current at the surface. It adds no ions and does not change how ions move in the solution	No
   Concentration	It changes how many ions there are in a given volume and how strongly they pull on each other	Yes

2. So. The nature of the electrode does not affect electrolytic conductance, so the answer is (c).

The idea to keep. Electrolytic conductance depends on the ions: the electrolyte, the solvent, the concentration and the temperature. The electrodes are only the contacts that let current in and out.

Answer from the NTA final answer key. Solution by PrepWiser.