The given solution has a concentration of hydrochloric acid of 1.0-8 M. To determine the pH of the solution, we need to consider the concentration of hydrogen ions (H+) in the solution.

pH is a measure of the acidity or alkalinity of a solution and is defined as the negative logarithm (base 10) of the concentration of H+ ions. A pH value less than 7 indicates acidity, while a pH value greater than 7 indicates alkalinity. A pH value of 7 is neutral.

Option 1 suggests a pH value of 7. However, since the concentration of H+ ions is less than 1.0 M, the solution is acidic, not neutral. So, option 1 is incorrect.

Option 2 suggests a pH value greater than 7 but not 14. This is a plausible option, as the concentration of H+ ions is indeed less than 1.0 M. However, there is no information suggesting that the pH value should be less than 14. So, option 2 is not incorrect but insufficiently precise.

Option 3 suggests a pH value less than 7. This is the correct answer because the concentration of H+ ions in the given solution is less