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4.1.3. BUFFER SOLUTIONS - uspbpep.com
Dissolve 21.0 g ofcitric acid R in 200 ml of 1Msodium hydroxide anddiluteto1000mlwithwaterR.Dilute40.3ml of this solution to 100.0 ml with0.1 M hydrochloric acid. 0.25 M Citrate buffer solution pH 3.0. 4012600. Dissolve 4.8 g ofcitric acid R in 80 ml of water R.Adjust the pH (2.2.3)with1 M sodium hydroxide and dilute to 100.0 ml with water R.
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