Question

What effect does the concentration of H+ (aq) ions have on the nature of a solution?

Answer 1

The concentration of H+ ions gives the indication about the solution that the solution is more acidic or neutral or basic in nature....
less concentration will give basic strength
more concentration will give acidic strength
and both H+ and OH- will give neutral solution

Answer 2

it tell about the acidic and the basic behavior of the solution
if the concentration on H+ ion decrease that means it is basic in nature for ex. NAOH and if the concentration on H+ ion increase than that means it is acidic in nature for ex. HCL