Question

The concentration of hydronium ion in a solution is 2 x 10
-4
M. What is the hydroxide ion
concentration

Answer 1

First off, what is the chemical formula for hydronium?

Answer 2

H3O+

Answer 3

Okay good. How many hydrogen ions make up this compound?

Answer 4

Are you sure the question asks for the M of hydroxide ion?

Answer 5

@hardequalsmath?

Answer 6

o-o

Answer 7

google c:

Answer 8

it's asking for the relationship between hydronium concentration and hydroxide concentration.

Answer 9

If the temperature is 25 C then we know that the ionic product of water = 10^-14
So 2*10^-4 * [OH-] = 10^-14
So [OH-] = 5*10^-11