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Make a buffer solution with a pH of 3.50 in order to learn an enzymatic protein reaction. The subsequent solutions, all 0.100 M, are available to youHCOOH Ka = 1.8 x 10-4 CH3COOH Ka = 1.8 x 10-5H3PO4 Ka = 7.1 x 10-3 NaCHOO Kb = 5.6 x 10-11NaCH3COO Kb = 5.6 x 10-10 NaH2PO4 Kb = 1.4 x 10-12Explain how you would prepare this buffer solution. Be specific about the volumes of the solutions you would use.
Balance the following equations and write the corresponding ionic and net ionic equations (if appropriate). Balance the equation
A synthesis gas at 500°C that analyzes 6.4% CO2, 0.2%O2, 40% CO, 50.8% H2, and the balance nitrogen is burnt with 40% dry excess air, which is at 25°C. The composition of the flue gas, which is at 720°C is 13% CO2, 14.3%H2O, 67.6% N2 and 5.1% O2. ..
two wines are available for blending one tank of 2000 l has a ta of 9.0 gl another tank of 4000 l has a ta of 6.0 gl.
The standard change in gibbs free energy= -69.0 kJ/mol. What is the change in G for this reaction at 298K when the partial pressures are PNO=0.100 P02=0.350 PN02=0.700 atm
The rate constant of the reaction A ? B + C is 2.75 x 10-7 s-1 at a certain temperature. The initial [A] is 2.19 M. How many days would pass before A had decomposed to the extent that 0.601 M of A remained?
Calculate the weight of benzene codistilled with each gram of water and the percentage composition of the vapor produced during a steam distillation. The boiling point of the mixture is 69.4 degrees C. The vapor pressure of water at 69.4C is 227.7..
Assuming that the Pauli exclusion principle remains valid in the distant universe, what is the maximum number of electrons that can populate a given orbital there.
An unknown salt is either NaF, NaCl or NaOCl.When 0.050 mol of the salt is dissolved in water for form 0.500 L of solution, the pH of the solution is 8.08.
Example on how to make up a buffer: A student has 100 mL of 0.1 M acetic acid and has plenty of 0.1 M sodium acetate and wants to make up a buffer with pH = 5.1.
Calculate the concentration of iodide (I-1) in a solution obtained by shaking 0.10M KI with an excess of AgCl(s).
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis of adenosine triphosphate, ATP, to adenosine diphosphate, ADP, as described by
If 34.0 mL lead(II) nitrate solution reacts completely with excess sodium iodide solution to yield 0.640 g precipitate, what is the molarity of lead(II) ion in the original solution?
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