The greater the pH of a solution is, the less acidic it's. For the reason that acetic acid is a susceptible acid, it'll be much less acidic than a powerful acid corresponding to HCl. Consequently, it's going to have a better pH than HCl. The equal factor applies to your subsequent query: considering NaOH is a better base than ammonia, an ammonnia resolution can be extra acidic than NaOH. As a consequence, ammonia will have a cut down pH than NaOH. And sure, if a solution of a salt is neutral (pH = 7), that means that neither the cation or the anion underwent hydrolysis.