Following solutions were prepared by mixing different volumes of NAOH of HCL different concentrations.
i. 60 mL \(\frac { M }{ 10 } \) HCl + 40mL \(\frac { M }{ 10 } \) NaOH
ii. 55 mL \(\frac { M }{ 10 } \) HCl + 45 mL \(\frac { M }{ 10 } \) NaOH
iii. 75 mL \(\frac { M }{ 5 } \) HCl + 25mL \(\frac { M }{ 5 } \) NaOH
iv. 100 mL \(\frac { M }{ 10 } \) HCl + 100 mL \(\frac { M }{ 10 } \) NaOH
pH of which one of them will be equal to 1?
