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Aqueous free chlorine is hypochlorous acid, HOCl, and hypochlorite ion, OCl-, with the relative amounts depending on the pH of the solution. Neglect ionic strength effects and T = 25 oC
Given that the pKa is 7.60 for HOCl at 25 oC, what is the pH of a solution prepared by adding 0.001 mole of NaOCl to one liter of distilled water?
A sample of solid having a density of 4.88 g/cm3 had an apparent mass of 16.0886. The density of the balance weights is 8.00 g/cm3. Calculate the true mass of the object.
Calculate [OH-] and pH in a solution in which dihyroden phosphate ion, H2PO4-, is 0.355M and hydrogen phosphate ion, HPO4 2- is
Enzyme can react with only a single substrate. Enzyme has a cofactor that promotes the catalytic activity
Elemental sulfur reacts with oxygen and water to produce Sulfuric acid in the presence of a catalyst. What minimum mass of sulfur is needed to prepare 175g of sulfuric acid
The equilibrium constant for the reaction of carbon and water to form carbon monoxide and hydrogen is .20 at 1000 degrees C. If an equilibrium mixture contains solid carbon, 0.40 M H2O and 0.40M CO, what is the concentration of H2
how much energy in kilojoules is needed to heat 4.00 of ice from -12.5 to 32.0? the heat of fusion of water is 6.01 and
The following reaction has equilibrium constant (kc) of 13 at 1700 K. The initial concentration of HI is 1.17 x 10^-3 M, H2 is 3.25 x10^-4 M, and l2 is 3.25 x 10^-4 at 1700k. Calculate Qc and determine which direction the system will travel as it ..
Benzoic acid, 1.25g , is reacted with oxygen in a constant volume calorimeter to form H2O(l) and CO2(g) at 298 K. The mass of the water in the inner bath is 1.40×103g . The temperature of the calorimeter and its contents rises 2.83K as a result of..
A current of 0.010 amp is passed through an aqueous solution of rhodium sulfate salt. The only reaction at the cathode is the deposition of rhodium metal. After 3.0 hours, 0.038g of rhodium metal has been deposited. What is the formula of the rhod..
Describe the predicted effect on glycine biosynthesis in a mutant mammalian cell if there is a mutation in the 5'-IRE sequence of ferritin mRNA that reduces the Ka of IRP binding as compared t binding with wild-type mRNA
Show that the proton condition for a NH4Cl solution is a linear combination of the mass balance equations and the charge balance equation.
A piece of iron with a mass of 350g at 300 C is added to 1.00kg of water at 20 C. what is the final temperature of the iron
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