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Directions for preparing a phosphate buffer, pH 7.00, approximately 0.5M in total phosphate. You may do this ignoring activity coefficients. In this exercise you will calculate the amounts of NaH2PO4 and Na2HPO4 solids (in grams) that should be added to a flask and diluted with water to make 0.5 L of the buffer. Include in the directions a fine pH adjustment step as follows. The solution will be adjusted to about 900 mL with pure water, and then adjusted to pH 7.00 with 3M NaOH or 3M H3PO4 using a calibrated pH meter and then finally diluted to the 1.000 L mark. You may assume that the final ionic strength, μ, of the solution will be 0.065.

          Directions for preparing a phosphate buffer, pH 7.00,
approximately 0.5M in total phosphate. You
may do this ignoring activity coefficients. In this exercise you
will calculate the amounts of
NaH2PO4 and
Na2HPO4 solids (in grams) that should be
added to a flask and diluted with water to make 0.5 L of the
buffer.  Include in the directions a fine pH adjustment
step as follows.  The solution will be adjusted to about
900 mL with pure water, and then adjusted to pH 7.00 with 3M NaOH
or 3M H3PO4 using a calibrated pH meter
and then finally diluted to the 1.000 L mark. You may assume that
the final ionic strength, μ, of the solution will be 0.065.

directions for preparing a phosphate buffer ph 700 approximately 05m in total phosphate you may do this ignoring activity coefficients in this exercise you will calculate the amounts of nah2 18944

Added by Montserrat G.

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