Question

In: Chemistry

In the titration of 0.010 L of 2.0 M NaOH with 1.0 M HI, what is...

In the titration of 0.010 L of 2.0 M NaOH with 1.0 M HI, what is the pH when 0.015 L of HI have been added?

Solutions

Expert Solution

HI                                                                            NaOH

MA = 1M                                                               MB = 2M

VA    = 0.015L                                                       VB    = 0.010M

                           M     =   MBVB-MAVA/VA+VB                                          MBVB>MAVA

                                  = 2*0.010 -1*0.015/0.01+0.015

                                  = 0.005/0.01+0.015

                               = 0.005/0.025   = 0.2 M

[OH^-]   = M         = 0.2M

POH = -log[OH^-]

             = -log0.2

            = 0.6989

PH       = 14-POH

          = 14-0.6989

           = 13.3011 >>>>answer

       = -log0.2


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