BCHM 658 Lecture Notes - Lecture 10: Logarithm, Titration Curve, Sodium Hydroxide

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15 Jul 2016
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Biomolecular tutorial 2 tutors" version ph and buffering. Buffers are solutions which minimise ph changes when small small amounts of acid or alkali are added, usually contain mixtures of weak acids and their salts (or weak bases and their salts). Buffers are necessary as many metabolic processes produce acid end products (e. g. lactic acid, co2)which interfere with normal function of cells. 3. given that the pka of hydrogen fluoride (hf) is 3. 4, calculate the ratio of fluoride ions (f. ) to covalent hf molecules present at each of the following ph values: ph 3. 4. [ha] : [a ph 7. 4: the concentration of carbonic acid, h2co3, in human plasma is about 0. 00125 m. Assuming that this is the true concentration (of the undissociated weak acid) use the. Henderson hasselbalch equation to calculate the concentration of hco3 when the ph is 7. 3. You may assume that h2co3 in blood has a pka. 1 value of 6. 1. in the plasma, antilog (1. 2) =

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