A strong monoprotic acid ionizes in water. If the [H3O+] concentration is 1.56 x 10^-4 M, what else is true?

pH = 10.19

The solution contains more hydronium ions than hydroxide ions.

pOH = 1.56 x 10^-4 M

The solution contains equal concentrations of hydroxide and hydronium ions. ( this is the choice) ?

Question

A strong monoprotic acid ionizes in water. If the [H3O+] concentration is 1.56 x 10^-4 M, what else is true?
 
		
pH = 10.19
 		
The solution contains more hydronium ions than hydroxide ions.
 		
pOH = 1.56 x 10^-4 M
 		
The solution contains equal concentrations of hydroxide and hydronium ions.  ( this is the choice) ?

btaylor · Answer

I'd say that the second one (The solution contains more hydronium ions than hydroxide ions) is true because it is a strong acid.

anonymous · Answer

so the The smaller the pH scale value, the greater the concentration of H3O+ ions?

btaylor · Answer

Yes. pH = -log[H3O+]. As pH decreases, the acidity increases.