What two species would actually constitute phosphate buffer
Assume you completely hydrolyze a sample of the peptide Phe-Val-Lys-Ser using the appropriate protease in a phosphate buffer solution at pH=7. What two species would actually constitute the phosphate buffer.
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By titration it is found that 27.5 mL of 0.155 M NaOH (aq) are required to neutralize 25.0 mL of HCl (aq). Calculate the concentration of the hydrochloric acid solution.
A scientist wants to make a solution of tribasic sodium phosphate, Na_3PO_4, for a laboratory experiment. How many grams of Na_3PO_4 will be needed to produce 525 mL of a solution that has a concentration of Na^+ ions of 1.20 M?
The Mn is clearly reduced and is the oxiding agent; how do you decide whether the H or the Fe is being oxidized? They both lose electrons.
Will the bond proceeds always be less than the face amount of the bonds when the contract rate is less than the market rate of interest?
You require a buffer with pH of 4.50. You have 1.00L of a solution of 1.80M acetic acid. How many grams of solid sodium acetate (NaC2H3O2, molar mass 82.0g/mol) must be added to give the pH of 4.50? The pKa of acetic acid is 4.74. Show all your work
When Dr. Farrell was a graduate student, he once made up a pH 8.0 sodium acetate buffer. Why would the casual observer to this buffering faux pas come tot eh conclusion that he had the intellectual agility of a small soap dish?
Bowman Corporation is considering an investment in special-purpose equipment to enable the company to obtain a four-year government contract for the manufacture of a special item.
An aqueous CaCl2 solution has a vapor pressure of 83.0 mmHg at 50 degrees celsius. The vapor pressure of pure water at this temperature is 92.6 mmHg. What is the concentration of CaCl2 in mass percent?
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