Question

the pH value of a solution is 5.what is the value of H+ ion concentration in it???

Answer 1

pH of solution is 5.

$pH=-log[H^+]\\ \\ \Rightarrow 5 = -log[H^+]\\ \\ \Rightarrow log[H^+] = -5\\ \\ \Rightarrow [H^+]=10^{-5}\ mol/l$

So $H^+$ concentration is $10^{-5}$ mol/l

Answer 2

   concentration is  mol/l