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A 0.021 mol sample of a weak acid, HX, is dissolved in 575 mL of water and titrated with 0.41 M NaOH. After 29 mL of the NaOH solution has been added, the overall pH = 6.074. Calculate the Ka value for HX.
What is the reaction that occurs with hexanal and propanol (give both the hemiacetal and acetal products)?
Describe the procedure for preparation of 250 cublic cm of aqueous sulphamic acid of accurately known concentration.
Consider the following equilibrium process at 686°C: CO2(g) + H2(g) CO(g) + H2O(g) The equilibrium concentrations of the reacting species are [CO] = 0.050 M, [H2] = 0.045 M, [CO2] = 0.086 M, and [H2O] = 0.040 M.
If you prepared a solution by adding equal numbers of moles sodium sulfite (Na2SO3) and sodium hydrogen sulfite (NaHSO3) to 50 mL water, what would be the pH of the solution?
Hexafluorosilicic acid is made by the reaction of silica and hydrofluoric acid by the following reaction 6HF + SiO2 ? H2SiF6 + 2H2O ?Hr = -670 kJ/mol
find the number of moles of water that can be formed if you have 218 moles of hydrogen gas and 104 moles of oxygen gas
The decomposition of N2O5 (g) to NO2 (g) and O2 (g) obeys first-order kinetics where k = 3.4 x 10-5 s-1 at 25 C, what is the initial rate of reaction
AgCl has a 78.1% ionic character and a diplole moment of 11.5D. what is the distance between the Ag and Cl atoms?
below which there is too little fuel to support combustion. For propane, the LFL is 2.1 mol-%. What is the mol fraction of propane in the air at the stoichiometric concentration?
what is the ph of a solution prepared by mixing 50.0ml of 0.125M KOH and 50.0 ml of 0.125M HCl
How many ml of 0.318 M K2Cr2O7 are needed to completely oxidize 179 ml of 0.768 M tin (II) chloride to tin (IV)?
How should a professional emergency responder be concerned about the following routes of radiation exposure for a person on scene and a person downtown?
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