Most common solutions have pH ranges between 1 and 14. What values of [H] are associated with

Question:

Most common solutions have pH ranges between 1 and 14. What values of [H] are associated with these extremes?
Use the following information. Chemists use the pH (hydrogen potential) of a solution to measure its acidity or basicity. The pH is given by the formula
pH = - log[H+]
where [H+] is the concentration of hydrogen ions in moles per liter.