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Lactic acid, HC3H5O3, is a monoprotic acid that dissociates in aqueous solution. If a solution containing 0.50 M lactic acid is 1.66 percent dissociated to ionic form, calculate the value of Ka for lactic acid.
For an acid-base reaction, what is the reacting species in barium hydroxide
find the temperature and the pressure of a gas inside the cylinder.1. a gas at 71degc occupies a volume of 0.67 l. at
Aspirin (acetylsalicylic acid) is a weak monoprotic acid. To determine its acid-dissociation constant, a student dissolved 2.00 g of aspirin in 0.600 L of water and measured the ph . What was the ka value calculated by the student if the ph of the..
A water at pH = 6.35 has HCO3- concentration of 2.2 mM. What is the alkalinity? Clearly specify your units
When 1 mol of Fe2O3(s) is formed by combustion of Fe(s)with O2(g), 824 kJ of heat is liberated. By this reaction, how many mol of Fe should be consumed in order to liberate 100. kcal of heat
That a supercooled gas eventually phase separates is consistent with the 2nd Law of Thermodynamics because the phase separation lowers the Helmholtz free energy of the system
What is the solubility (in M) of PbCl2 in a 0.15 M solution of HCl. The Ksp of PbCl2 is 1.6 x 10^-5
Calculate the pH of a solution prepared by mixing 20.5mL of a 0.500M sodium fluoride solution with 32.5mL of a 0.750M hydrofluoric acid solution.
An insulated tank contains half liquid and half vapor by volume in equilibrium. The release of a small quantity of vapor without the addition of heat will cause
Describe how you would prepare the following aqueous solution: 230 g of a solution that is 0.60 molal Na2CO3 starting with the solid solute.
Determine the density and atomic radius of tungsten (W) if it crystallizes in a face centered cubic arrangement with cell edge 399 pm.
The combustion of gasoline produces carbon dioxide and water. Assume gasoline to be pure octane and calculate the mass (in ) of carbon dioxide that is added to the atmosphere per 1.7 of octane burned
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