A measure of the acidity of a solution is?

Answer 1

Its hydrogen ion concentration determines whether a solution is to be acidic (pH below 7) or basic (pH higher than 7.0) .

Acidic: [H+] > [OH-] , or pH < 7.0 in water at 25 oC

Basic : [H+] < [OH-] , or pH > 7.0 in water at 25 oC

In between is neutral: [H+] = [OH-] = 1.0*10-7, or pH = 7.0 in water at 25 oC

Note:

Remember that (always, by definition) pH = - log[H+] and[H+] = 10-pH

and [H+] * [OH-] = 10-14 (or pH + pOH = 14.0) in water at 25oC

Answer 2

By it's disassociation number. A strong acid disassociates in solution almost 100%.

H2SO4

H +

and

HSO4 -

To almost 100%. ( reaction continues with this acid, but do not worry about that until college chemistry )

Answer 3

It is determined by the pH. If the pH of the solution is less than 7, it is an acid. If it is 7, it's neutral and if it's greater than 7 it's a base.

Answer 4

Acidity is the concentration of hydrogen or H+ ions in a solution, described by the pH scale (which measures H+ concentration).

Answer 5

Usually litmus paper (if the substance is in liquid form).

Answer 6

concentration

Answer 7

pH