The pH of a solution is increased from 3 to 6 , its H ⁺ ion concentration will be

Step-by-step solution

When pH =3 then [ H ⁺ ]=10⁻³ M . After that we increased the pH from 3 to 6 then [ H ⁺ ]=10⁻⁶ M means reduced 1000 times.