Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations : A. 60 mL ${M \over {10}}$ HCl + 40 mL ${M \over {10}}$ NaOH B. 55 mL ${M \over {10}}$ HCl + 45 mL ${M \over {10}}$ NaOH C. 75 mL ${M \over {5}}$ HCl + 25 mL ${M \over {5}}$ NaOH D. 100 mL ${M \over {10}}$ HCl + 100 mL ${M \over {10}}$ NaOH pH of which one of them will be equal to 1?

Question

Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations :

A. 60 mL ${M \over {10}}$ HCl + 40 mL ${M \over {10}}$ NaOH

B. 55 mL ${M \over {10}}$ HCl + 45 mL ${M \over {10}}$ NaOH

C. 75 mL ${M \over {5}}$ HCl + 25 mL ${M \over {5}}$ NaOH

D. 100 mL ${M \over {10}}$ HCl + 100 mL ${M \over {10}}$ NaOH

pH of which one of them will be equal to 1?

Solution

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