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A 0.1236-g sample of an unknown monoprotic acid was dissolved in 25.8 mL of water and titrated with 0.0680 M NaOH solution. The volume of base required to bring the solution to the equivalence point was 19.1 mL.
(a) Calculate the molar mass of the acid.
(b) After 11.7 mL of base had been added during the titration, the pH was determined to be 5.17. What is the Ka of the unknown acid?
Calculate the mass of sodium hydroxide that must be added to 1.00 L of 1.00 M HC2H3O2 to double the pH of the solution (assume that the added NaOH does not change the volume of the solution)
If we define the quantum yield as ? = d[A2]/dt / Ia , develop an expression for the quantum yield of the reaction. e) If the fluorescence is minimal (k3 = 0), what would be the value of
1.3 grams of the non-electrolyte C2 H6 O is dissolved in water and the freezing point of the solution is found to be -0.80C. (a) What is the molar mass of C2 H6 O?
What range of magnetic field strength would be required to cover the mass range between 16 and 625, for singly charged ions, if the accelerating voltage is held constant?
If 200ml of 2.00M HCL solution is added to 400ml of 1.00M NaOH solution What molarity will the resulting solution NaCl have?
How many grams of sodium lactate ( or ) should be added to 1.00 of 0.140 lactic acid ( or ) to form a buffer solution with = 4.10? Assume that no volume change occurs when the sodium lactate is added.
Given that aprotic solvents are not practical for unimolecular processes (little if any reaction occurs via a unimolecular pathway) draw the skeletal structure of the major organic substitution product when (2S,6R)-2,6-dibromo-6-methyloctane is tr..
Use of fossil fuels - Should we be burning the raw materials for medicine and polymers? Where will we be in 50 years on this issue?
Given that the delta H of vaporization = 35.00 kj/mol and delta H of sublimation= 40.00 kj/mol, calculate the triple point of this material. this compound melts at 170.0 k to 270.0 k temperature.
If 26.23mL of potassium permanganate solution is required to titrate 1.041g of ferrous ammonium sulfate hexahydrate, FeSO4(NH4)SO46H2O.
What is the equilibrium constant expression for the following reaction- C5H5NH(aq) + H2O(l) ? C5H5NH2+(aq) + OH-(aq)
The absorbance of the unknown solution before the addition of the standard was 0.5622, and after the addition of the standard was 0.7822.
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