A 25.0ml sample of 0.1 M HCl is titrated with 0.1 M NaOH . What is the pH of the solution at the points where 24.9 and 25.1 ml of NaOH have been added ?

A 25.0ml sample of 0.1 M HCl is titrated with 0.1 M NaOH . What is the

1.	A 25.0ml sample of 0.1 M HCl is titrated with 0.1 M NaOH . What is the pH of the solution at the points where 24.9 and 25.1 ml of NaOH have been added ?
Answer» `3.70,10.70 ` ` 3.30, 10.30` ` 3. 70 , 10 .30` ` 3. 0, 11 . 10 ` Solution :` at =24.9 ML` `N_aV_a =25xx 0.1 , N_b V_b =24.9xx 0.1` ` [H^(+) ]_("left")=(2.5 - 2.49)/(50.1 )=2 xx 10 ^(_4)` ` pOH =3.7 rArr pH=10.3`