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Calculate the pH at the stoichiometric point when 25 mL of 0.091 M nitric acid is titrated with 0.34 M NaOH.


Calculate the pH at the stoichiometric point when 25 mL of 0.091 M nitric acid is titrated with 0.34 M NaOH.

Step 1


            Volume of Nitric acid=25 mL

             Molarity of Nitric acid=0.091

             Molarity of NaOH=0.34


Step 2

Calculate millimoles of acid:

Milli moles of acid= Volume (mL) X Molarity

Milli moles of acid= 25 mL X 0.091 M

                                  = 2.275 milli moles

At stoichiometric point, 2.275 milli moles of NaOH must be added as both acid and base are monobasic and monoacidic respectively.

Step 3

Calculate the volume of NaOH:

Milli moles of acid= Volume (mL) X Molarity


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