Question

A student measured the pH of his soda and found it to be 4.5.

Calculate the [H3O+] in the soda.

Answer 1

0.0111 M

Step-by-step explanation:

pH = 4.5

[H3O+] = ?

Relationship between both quantitiesis given by:

pH = -log₁₀ [H3O+]

-pH = log₁₀ [H3O+]

-4.5 = log₁₀ [H3O+]

[H3O+] = e ^ (-4.5)

[H3O+] = 0.0111 M