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A monophonic acid, HA is dissolved in water: The equilibrium concentrations of the reactants as well as products are [HA] = 0.170 M [H ] = 2.00 × 10-4 M [A-] = 2.00 × 10-4 M Compute the value of pKa for the acid HA.
A dark glass bottle of chemicals is found in cleaning out an old basement. Part of the label has been eaten away with age. Only the last part of the label is readable.
The working buffer solution was warmed to 30oC and the pH of this solution was determined to be 8.03. What is the pKa of Tris under these conditions
a solution is prepared by adding 1.60 grams of solid NaCl to 50ml of 0.100M CaCl2. what is the molarity of chlorine ion in the final solution? assume that the volume of the final solution is 50ml
find ratio of the atomic mass of silicon to hydrogen if every 100g of sih4 contains 87.45g of si and 12.55g of h.some
A corrosion potential of -0.299 V versus SCE was measured for a corroding alloy. what was the potential versus SCE
which you might separate (a) K+ from Ag+, (b) Ba2+ from Pb2+, (c) NH4+ from Ca2+, and (d) Ba2+ from Cu2+. All cations are assumed to be in aqueous solution, and the common anion is the nitrate ion.
How many unit cells are in exactly 1 cm3?
Two weak acids, HA (pKa=3.0) and HB (pKa=5.0) have equal partition coefficients for extraction from water to n-octanol. an aqueous solution with equal concentrations of HA and HB is extracted with n-octanol
What is the molar solubility of silver Chromate in a solution of 0.20 M silver nitrate? Ksp for silver Chromate is 1.1 x 10^-12.
The volume of a gas is 93 mL when the temperature is 91 C. if the temperature is reduced to 0 C without changing the pressure, what is the new volume of the gas
calculate gibbs free energy and determine the type of thermodynamic reaction.n2gnbsp 3h2gnbsplarrrarr 2nh3gnbsp
a generic salt ab has a molar mass of 243 gmol and a solubility of 8.90 gl at 25 c what is the ksp of this
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