Question

is coffee an alkali or an acid?

Answer 1

I have always heard that coffee is acidic.

Answer 2

I agree, E.G. Coffee is acidic.

http://www.ctds.info/acidic-foods.html

Answer 3

Just to add something to the mixture (no pun intended), the article by Ms. Sue suggests that coffee is acid BECAUSE it makes urine acid. Here is a site that contains a good bit more of the chemistry involved, including effects of roasting etc. In fact, a relatively large number of acids have been isolated from coffee beans which suggests it is acid initially and need not be metabolized by the body to make it acid.

Answer 4

I agree that the cofee is acidic.