Answer: Wouldn't it be easier to use litmus paper?
Explanation: That way you could figure out the PH and know that the hydrochloric acid is acid and the alkaline is the sodium hydroxide. The sugar solution won't show either way.
What it's basically asking is for you to name two places within the book that you believed were the most important to the story and why. For the why it wants you to explain what was so important about these places that they made the character who they are now.