Acid: pH of Solution:

Question

HA 5.6
HB 3.9
HC 4.7

Which list shows the acidic solutions in order from least conductive of electricity to most conductive?

Answer 1

The conductivity of a solution is generally related to its ion concentration. In an acidic solution, lower pH values indicate a higher concentration of hydrogen ions (\(H^+\)), which enhances conductivity.

Given the pH values of the solutions:

• HA: pH 5.6
• HB: pH 3.9
• HC: pH 4.7

We can determine the acidity and hence the conductivity:

• HA (pH 5.6) has the highest pH (least acidic) and therefore will have the lowest conductivity.
• HC (pH 4.7) is more acidic than HA but less acidic than HB, so it will have moderate conductivity.
• HB (pH 3.9) has the lowest pH (most acidic) and thus will have the highest conductivity.

Thus, the order from least conductive to most conductive is:

1. HA (pH 5.6)
2. HC (pH 4.7)
3. HB (pH 3.9)

So the final answer is: HA < HC < HB.