2. Classify the following solutions as acidic, basic, or neutral at 25OC.
a. pH = 13.00
b. [H3O+] = 1.0 x 10-12 M
c. pOH = 5.00
d. [OH-]= 1.0 x 10-9M

a) pH = 13.00 : basic

b) : basic

c) pOH = 5.00 : basic

d) : acidic

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.

Acids have pH ranging from 1 to 6.9 and bases have pH ranging from 7.1 to 14.Neutral substances have pH of 7.

a) pH = 13.00

As pH is more than 7, the solution is basic.

b)  

Putting in the values:

As pH is more than 7, the solution is basic.

c) pOH = 5.00

As pH is more than 7, the solution is basic.

d)

Putting in the values:

As pH is less than 7, the solution is acidic.

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