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Using a 0.25 M phosphate buffer with a pH of 7.6, you add 0.75 mL of...

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Chemistry

Using a 0.25 M phosphate buffer with a pH of 7.6, youadd 0.75 mL of 0.45 M NaOH to 59 mL of the buffer. What isthe new pH of the solution?

Answer & Explanation Solved by verified expert
3.9 Ratings (792 Votes)
The buffer we are dealing with is composed mainly by thefollowing speciesand it has a pKa 721To calculate the relation between HPO42and H2PO4 we can use thehendersson hasselbach equationWhere 721 is the pKa A HPO42 andAH    See Answer
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