1) a) Calculate the pH of a buffer that is 0.12 M in lactic acid and...

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Chemistry

1) a) Calculate the pH of a buffer that is 0.12 M in lactic acidand 0.11 M in sodium lactate. (b) Calculate the pH of a bufferformed by mixing 85 mL of 0.13 M lactic acid with 95 mL of 0.15Msodium lactate.
2) You are asked to prepare a pH=3.00 buffer solution startingfrom 1.25 L of a 1.00 M solution of hydroflouric acid (HF) and anyamount you need of sodium flouride (NaF). (a) What is the pH of thehydroflouric acid solution prior to adding sodium flouride? (b) Howmany grams of sodium benzoate should be added to prepare thebuffer? Neglect the small volume change that occurs when the sodiumbenzoate is added.
3) Calculate the solubility of Mn (OH)2 in grams per liter whenbuffered at pH (a) 7.0, (b) 9.5, (c) 11.8

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4.4 Ratings (715 Votes)

the Ka value of lactic acid 14 104we use the Henderson Hasselbach equationpH pKa log salt Acid pKa log ka log 14x104 38538acid concentration of lactic acid 12Msalt concentration of salt 11Mputting value in abnove equationpH 38538 log 11 12 38538 log 09166 3853800378 38162 What See Answer

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