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Description of Quant problemsPrepare 1.00L of a pH~12 buffer with a total phosphate concentration of 0.050 M.You have at your disposal the following compoundsCompounds:H3PO4 Ka=7.11*10^-3 FW=97.9950NaH2PO4 Ka=6.34 * 10^-8 Fw=119.9769Na2HPO4= ka=4.22*10^-13 fw=141.9588Na3PO4 Fw=163.9407
Which two compounds would you use to prepare a buffer of ph~12 and how many grams of each of the two selected compounds would you need
A 0.020 F solution of succinic acid (pKa=4.20, pKa2=5.64) is buffered at pH 5. what fraction of the succinic acid is present as the amphiprotic form at this pH
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If a gas is collected over water at 30.0oC in a 50.0 ml container and the pressure of the "wet" gas is found to be 645 torr, what would the pressure of the "dry" gas be in the same container and temp.
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Determine the freezing point and calculate the final temperature if initially this iron nail was at temperature of 28 degree Celsius?
Calcium carbonate and sand mixture with weight of 4 grams is reacted with excees of HCl results in the production of carbon dioxide then find out the percent of calcium carbonate in the original mixture?
Determine value for the rate of formation of HCl during the same interval of 3 seconds If the rate of disappearance H2 = -0.13 M/s at this specific time?
Medical technicians use deoxyglucose labeled with fluorine-18 to locate tumors using a pet scan. A medical technician injects a patient with a therapeutic dose of fluorine-18.
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