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Problem- The equilibrium constant for triiodide formation from iodide and iodide is about 700. The extinction coefficients of iodine and triiodide at the absorption maximum of triiodide are about 16 and 25,000 respectively. Show mathematically that the absorption of iodine does not make a significant contribution to the absorption of the solution you prepared for Part A of Procedure (5 ml of 0.0001 M iodine + 10 ml of 0.5 M KI)
I want you to explicate the chemistry in this problem
Calculate the volume of 0.500M hydrochloric solution that must be added to 20.5g of sodium ethanoate to make 500cm3 a buffer of pH4.50.The pKa value of ethanoate acid is 4.76.
Show the mechanism for the preparation of 1-bromobutane from 1-bromobutanol reacting with NaBr and sulfuric acid. an sn2 mechanism and one step.
48.61 g of magnesium was dissolved in diluted sulfuric acid and 490 g of MgSO4 . 7H2O was isolated from the solution. How many percent of impurities (if any) did the metal contain?
What is the molar mass of a covalent compound if 0.486 g of it is dissolved in 25.0 mL of water and produces a freezing temperature
A 1.08 g sample of caffeine, C8H10N4O2, burns in a constant-volume calorimeter that has a heat capacity of 7.85 kJ/K. The temperature increases from 298.55 K to 303.37 K. What is the molar heat of combustion of caffeine (in kJ).
The total pressure in an 12.4L automobile tire is 42psi at 15 degrees Celsius. how much does the pressue in the tire rise if it warms to a temperature
In either of the simple distillation experiments, can you account for the boiling point of your product in terms of the known boiling points of the pure components of your mixture?
How much ozone is used if the following reaction releases 568kJ of energy in the form of heat? Pb(s) + C(s) + O3(g) ---------> PbCO3(s)
The boiling point elevation of a solution consisting of a nonvolatile solute in 90.7 g of benzene is .6348 degrees celsius. What is the molecular weight of the unknown solute in g/mol
a sample of h2 gas is combined with o2 gas. the combination has a total pressure 820 torr and the o2 gas has a partial
Calculate the attractive force (in Newtons) between a cation with a valence of +3 and an anion with a valence of -2, the centers
What happens to recrystallization if crystallization is accelerated by immediately placing the flask of hot solution from the gravity filtration into the ice-water bath
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