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You are titrating 110.0 mL of 0.080 M Ca2 with 0.080 M EDTA at pH 9.00. Log Kf for the Ca2 -EDTA complex is 10.65, and the fraction of free EDTA in the Y4- form, ?Y4-, is 0.041 at pH 9.00.
What is K\'f, the conditional formation constant, for Ca2 at pH 9.00?
What is the equivalence volume, Ve, in milliliters?
Calculate the concentration of Ca2 at V = 1/2 Ve?
Calculate the concentration of Ca2 at V = Ve.?
Calculate the concentration of Ca2 at V = 1.1 Ve.?
the decomposition of N2O5 in carbon tetrachloride proceeds as follows: 2 N2O5 -> 4 NO2 + O2. The rate law is first order in N2O5. At 64 degree celcius the rate constant is 4.82 x 10^ 3 s ^ -1.
How many moles of CO(NH2)2 are present in 105 g of water, if the freezing point of the solution is -4.02C? kf(water) = 1.86 K · kg/mol.
An unknown compound burned with a yellow, nonsmoky flame and was found to be insoluble in 5% sodium hydroxide solution but soluble in concentrated sulfuric acid.
a sample of nitrogen gas is collected over water at a tempature of 23.0 c. what is the pressure of the nitrogen gas if atmospheric pressure is 785 mm hg
Could you tell me what is the purpose of this reaction (Michael and aldol condensation reactions), and the stepwise mechanism of the reaction.
the energy is 18.44 kj/mol and for the methyl group in equatorial position the energy was 8.66 KJ/mol based on this information which is more stable and why?
Crystalline solids are well-ordered arrays of atoms or molecules. Crystalline solids may be metallic solids, molecular solids, or ionic solids.
Write the expression for the equilibrium constant, Kb, for methylamine also compute the molar concentration of OH- in the 50.0 mL sample of the CH 3 NH 2 solution.
calculate the inimum temperature at which this process will be spontaneous under standard conditions. Assume that Delta Ho and Delta So do not vary with temperature.
Calculate what the pH is at 0 mL added strong acid, the quarter-, half-, and three-quarter-equivalence points, the equivalence point, and when excess acid has been added.
What is the molar mass of a gas if 0.250 g of the gas occupies 215 mL at 618 mmHg and 30.0°C?
What are the total pressure in the flask and the partial pressure of HOF after exactly 30 minutes and After 45 minutes If the partial pressure of HOF in a 1.00-L flask is initially1.00 × 10 2 mm Hg at 25 °C?
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