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An enzyme-catalyzed reaction was carried out in a 0.1 M Tris buffer, pH 7.8. As a result of the reaction, 0.015 mole/Liter of H+ was produced. Note that the pKa of Tris is 8.1.
a) What was the ratio of Tris+ (protonated form)/Tris0 (conjugate base) at the start of the reaction?
b) What were the concentrations of Tris+ and Tris0 at the start of the reaction?
c) What were the concentrations of Tris0 and Tris+ at the end of the reaction?
d) What was the pH at the end of the reaction?
e) What would the final pH be in the absence of any buffer?
Given a solution containing 0.01M of lead chloride and 0.01M of lead chromate, calculate the concentration of Pb2+. Using the Ksp(PbCl2)=1.7x10^-5 and Ksp(PbCrO4)=1.77x10^-14. What is the solid remaining?
The NaHCO3 is the limiting reactant and the HCl is the excess reactant in this experiment. Determine the theoretical yield of the NaCl product.
If a wave has a frequency of 6.9536 x 109 Hz and an energy of 4.6076 x 10-24 J, what is the speed of light.
After the addition of a large excess of acid (in comparison with the acid volume needed to reach the equivalence point) D) tell how many millileters of acid are required to reach the equivalence point
If, in a certain experiment, over a specific time period, 0.0039 mol PH3 is consumed in a 1.8-L container each second of reaction, what are the rates of production of P4 and H2 in this experiment?
Potable water (drinking water) should not have manganese concentrations in excess of 0.05 mg/mL. If the manganese concentration is greater than 0.1 mg/mL, it imparts a foul taste to the water and discolors laundry and porcelain surfaces.
flask shaken until the solution was uniform. A sample of 25.0 mL of this glucose solution was diluted to 0.500 ml then determine how many grams of C6H12O6 are in 100 mL of the final solution?
If 6.06 L of O2 gas is collected over water at 250C (vapor pressure = 23.8 torr) and a barometric pressure of 702 torr, what is the mass of H2O2 (MM = 34.02 g/mole) decomposed?
If equal volumes of 0.15 NaOH and 0.10 NaH2PO4 are mixed what type of system is formed? A) Buffer Ka2 B) amphiprotic C) Buffer Ka3 D) strong base
The dissociation of solid silver chloride in water to produce silver ions and chloride ions has an equilibrium constant of 1.8 x10-18. Based on the magnitude of the equilibrium constant, is silver chloride very soluble in water? Explain your answe..
What are your actual experimental ratios? Give possible reasons for any observed variations from these ratios.
Determine how much heat is released at constant pressure if 471.0 g of NO2 is produced,?
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