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A new potential heart medicine code-named X-281 is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill you are told that X-281 is a monoprotic weak acid, however because of security concerns, the actual chemical formula must stay behind top secret. The company is interested in the drug's Ka value because simply the dissociated form of the chemical is active in preventing cholesterol buildup in arteries.
To find the pKa of X-281, make a 0.089M test solution of X-281. Explain the pH of the solution is determined to be 3.00. Define what is the pKa of X-281?
Decaborane, B10H14, was used as a fuel for rockets in the 1950's . It ignites spontaneously with O2 according to the following reaction: B10H14 + 11O2 ? 5B2O3 + 7H2O
If carbon dioxide gas is collected over water at 25°C and 775 torr, what is the partial pressure of the CO2? The vapor pressure of water is 23.8 torr at 25°C.
Consider the autodissociation of water as the behavior of an Arrhenius acid. Use this to explain the temperature dependence of the autoionization of water
Calculate the pH change that results when 11 mL of 5.8 M NaOH is added to 800. mL of each the following solutions.
What is the mass of a piece of aluminum that is found to displace 13.4 ml of water and has a density of 2.66 g/cm^3
Why did the grape juice change color when an acid or base was added. 5. You added a base, sodium bicarbonate, to test tube 1 that contained citric acid and an acid to test tube 2 that contained base.
The acid-dissociation constant for hypochlorous acid (HClO) is 3.0 X 10-8 . Calculate the concentrations of H3O+, ClO-, and HClO at equilibrium if the initial concentration of HClO is 0.0090 M.
allicin is the compound responsible for the characteristic smell of garlic. an analysis of the compound gives the
Which of the following equations represents the proper net ionic equation for the precipitation of an insoluble hydroxide compound from Al(NO3)3(aq) and KOH (aq)
The resulting solution required 40.70 mL of 0.08765 M AgNO3(aq) to precipitate the Cl^- (aq) and Br^- (aq) as AgCl(s) and AgBr(s).
Calculate the standard enthalpy of formation of solid diboron trioxide (B2O3) using the following thermochemical information
The pH of the resulting solution is 6.35. Calculate the Ka for the acid.
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