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Tris base (pka =8.1 ; ka = 8.32 e-9) was dissolved in 0.5l of water to give the final concentration of 1 M. a.) find pH of the obtained solution. b.) how much does the pH change after addition of 1 ml of 10N HCl?
How much would an empty volumetric flask, (weighing 27.16 grams, has a volume of 100.4 cm3 ) weigh when filled with bromine, an element that has a density of 3.1028 g/cm3.
someone investigating the properties of solutions containing carbonate ions prepared a solution containing 5.639g
What are 3 theoretical reaction mechanisms that can occur with bromine addition to trans-cinnamic acid. The last mechanism accounts for a mixture of syn and anti products
What is the pH of a solution made by dissolving 46g of acetic acid in enough water to make 700 ml of solution
Identify the substance produced in the liver that helps catalyze this reaction.
How many grams of Na3PO4 is needed to produce 575mL of a solution that has a concentration of Na+ ions of 1.50M?
An inflated balloon has a volume of 0.55 L at sea level (1 atm) and is allowed to rise to a height of 6.6 km, where the pressure is about 0.40 atm.
How many grams of TiCl4 are needed for complete reaction with 125L of H2 at 440Celsius and 800 mm Hg pressure. 2TiCl4+H2=2TiCl3+2HCl
Phenol red indicator changes from yellow to red in the pH range 6.6 to 8.0. State what color the indicator will assume at the equivalence point for the titration of NHc with HCL
In the "free electron molecular orbital" (FEMO) theory, the electrons in a conjugated molecule are treated as independent particles in a box of length L. Predict the minimum excitation energy in butadiene.
For the series of spectral lines of atomic hydrogen with n1 = 3, which of the following wavelengths does not correspond to a wavelength predicted by the Rydberg equation? Rydberg equation: 1/? = (1.097 x 107 m-1) x (1/n12 - 1/n22) ----- A. 1875 nm..
Electrolysis of a solution containing an unknown metal ion with a +3 charge deposited 0.159 g of the metal on the cathode over a period of 2.00 minutes at a constant current of 2.00 A. What is the molecular weight of the unknown.
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