Select the best general question to formulate from the chapter question. How do you measure and compare acidity levels? How do you measure the acidity levels of vinegar and hydrochloric acid? How many times greater is the acidity of hydrochloric acid than vinegar?
"How many times greater is the acidity of hydrochloric acid than vinegar?" is the best option from the list, since this is what the chapter is primarily dealing with.
