The list which shows the acidic solutions in order from least conductive of electricity to most conductive is HA, HC, HB
The pH of a solution is defined as the negative logarithm of the hydrogen ion concentration of the solution.
The higher the hydrogen ion concentration, the lower the pH of that solution whereas, the lower the hydrogen ion concentration of a solution the higher the pH of that solution.
In solutions, ions are responsible for electrical conductivity. Therefore, an acid solution with low pH or high hydrogen ion concentration will conduct electricity better.
In the given acidic solutions, HA, HB and HC, the order from least electrical conductivity (highest pH) to most electrical conductivity (lowest pH) is:
HA, HC, HB with pH 5.6, pH 4.7 and pH 3.9 respectively.
The other arrangements: (HA, HB, HC), (HB, HC, HA), and (HC, HB, HA)
are wrong because they do not follow the order of decreasing pH.
Learn more: brainly.com/question/17170587
