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Amoxicillin is an important antibiotic. It can be obtained by an enzyme catalyzed reaction in aqueous solution. To ensure product stability and enzyme activity, you need to run the reaction in a buffer system at a pH of 7.30. a) Using the list provided, select the most appropriate acid to use together with its sodium salt for the buffer system. (Choose based on Ka values and assume no other effect on reaction) Hydrofluoric acid (Ka = 7.4 x 10^-4) Acetic acid (Ka = 1.8 x 10^-5) Hypochlorous acid (Ka = 3.5 x 10^-8) Hypobromous acid (Ka = 2.0 x 10^-9) Hydrocyanic acid (Ka = 4.9 x 10^-10) b) Using the Henderson-Hasselbalch equation, calculate the relative amounts of the acid and its sodium salt that need to be mixed to achieve a pH of 7.30. c) If the reaction is carried out in 1.00L of solution and your buffer system is composed of 0.50 M acid and the appropriate amount of sodium salt, what will the pH be if 0.10 moles of H3O+ are produced during the reaction?
At 400°K , 0.20 M NO and 0.10 M Cl2 were mixed. The reaction rate was found to be 3.04 ? 10-6 M/s. What is the value of the rate constant, k?
How much heat is released when 50.0 grams of water at 100 degree celcius hits the skin and cools to a body temperature of 37 degree celcius.
The mass of 322 mL of hydrogen gas at 4.0 atm and -73°C is 1.21 grams. What is the density of hydrogen gas at STP?
Identify the unknown gas - Find the molecular formula of the compound
What monosaccharide is the C-2 epimer of alpha-D-galactose? Are these two molecules diastereomers?
How much heat is needed to warm 45.6 grams water from 23.0° C to 40.0 °C?
A 6.50-g sample of copper metal at 25.0 C is heated by the addition of 84.0 J of energy. The final temperature of the copper is ____ C.The specific heat capacity of the copper is 0.38J/g-K.
Calculate the heat absorbed by 15.0 g of water to raise its temperature from 20.0oC to 50.0oC at constant pressure. The specific heat of water is 4.18 J/g.oC
Give examples of a neutral salt, acidic salt and basic salt. Explain your choice.
osmium has a density of 22.6 g/cm3. what volume (in mL) would be occupied by a 21.8 g sample of osmium?
Calculate the molarity of a solution of glycerol made by dissolving 53.000 mL glycerol at 15 'C in enough water to make 270.00 mL of solution.
Calculate how wide is the cloud of organisms at the time peak concentration takes place at the intake pipe.
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