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When 100mL of an aqueous solution containing 1.0g of caffeine is extracted with 10mL of chloroform at room temperature, .5g of caffeine is transferred to the chloroform layer. Compute the distribution coefficient of caffeine between chloroform and water at room temperature.
starting with an aqueous solution of 115 ml of 0.35 m pyridine kb 1.7 x 10-9 determine the observed ph of the solution
Write the Kb reaction of hypochlorite, OCl-. Given that the Ka valuse for HOCl is 3.0x 10^-8 calculate Kb for OCl-
Describe the processes of fatty acid oxidation and synthesis in animal tissues, pointing out their similarities and differences
Equivalent weight of Hydrogen Show how as well as how many electrons are involved in one equivalent of oxidation-reeducation
Propanoic Acid, HC3H5O2, is a weak acid. A 0.125 M solution of propanoic acid, HC3H5O2, dissociates 1.020%. Using this information, calculate the pH of the 0.125 M solution of propanoic acid.
10.00 mL of a 0.250 M solution of HOAc is diluted to 100.0 mL as well as then titrated with a 0.100 M solution of NaOH. Define what volume of NaOH requires to be added to reach the endpoint. Define what is the pH at the endpoint
Calculate the pH of a solution made from 10.0mL of 0.10M HCL, 20.0mL of 0.050M NaOH, and 30.0 mL of 0.20 M NaCl. Ka for HAc (if needed)=1.8x10^-5
an inert gas has a volume of 941 ml at temperature 28 oC and pressure 675 Torr. What volume does the gas occupy at standard ambient temperature and pressure (SATP)?
a rigid ball contain 25.0 liters of air at 22 degree Celsius and 6.25atm pressure was placed in an oven at a temp of 100degree what was the new pressure inside the ball.
Why did the grape juice change color when an acid or base was added. 5. You added a base, sodium bicarbonate, to test tube 1 that contained citric acid and an acid to test tube 2 that contained base.
The atmospheric sulfur dioxide concentration over a certain region is 0.12 ppm by volume. Calculate the PH of the rainwater due to this pollutant. Assume the dissolution of SO2 does not affect its pressure.
A sample of N2 gas occupies 2.40 L at 20oC. If the gas is in a container that can contract or expand at constant pressure, at what temperature will the N2 occupy 4.80 L
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