Question

What is the concentration of hydronium ions for a solution of aqueous ammonia for which [OH-] = 2.5 x 10-4 M? [H3O+]=

Answer 1

Answer:
`[H_3O^+]=4.0*10^-^1^1M`

Explanation: Concentration of hydroxide ion and hydronium ion are related to each other as:

`[H_3O^+]=(1.0*10^-^1^4)/([OH^-])`

Hydroxide ion concentration is given. So, we can plug in the value and calculate the hydronium ion concentration easily.

`[H_3O^+]=(1.0*10^-^1^4)/(2.5*10^-^4)`

`[H_3O^+]=4.0*10^-^1^1M`