Following solutions were prepared by mixing different volumes of NAOH of HCL different concentrations.
(i) `60 mL (M)/(10) HCI+40 mL (M)/(10) NaOH`
(ii) `55 mL (M)/(10) HCI+45 mL (M)/(10) NaOH`
(iii) `75 mL (M)/(5) HCI+25 mL (M)/(5) NaOH`
(iv) `100 mL (M)/(10) HCI+100 mL (M)/(10) NaOH`
pH of which one of them will be equal to I?

Options

A. iv
B. i
C. ii
D. iii

Answer

D