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Explain which is the best acid to use in the preparation of a buffer with pH = 9.3?Option-
NH2OH (Kb = 9.1 x 10^-9)
CH3NH2 (Kb = 3.7 x 10^-4)
NH3 (Kb = 1.8 x 10^-5)
C6H5NH2 (Kb = 4.3 x 10^-10)
For the decomposition of sodium bromide: NaBr = Na(s) + 1/2Br2(liquid) the change in Gibbs Free Energy (delta G) is 349 KiloJoules What is the free energy of formation of NaBr(solid)?
a monoprotic acid that dissociates in aqueous solution. If a solution containing 0.50 M lactic acid is 1.66 percent dissociated to ionic form, calculate the value of Ka for lactic acid.
a mixture of p-nitrophenol and o-nitrophenol can be separated by steam distillation. the o-nitrophenol is steam
Consider an electron moving from an n = 2 orbital to an n = 1 orbital. For this to occur, will the atom need to absorb energy or dissipate energy by releasing a photon of electromagnetic radiation. Is the n = 2 orbital more or less stable than the..
a lake with constant volume 10 x 106 m3 is fed by a pollution-free stream with flow rate 50 m3s. a factory dumps 5 m3s
Ba(OH)2 is dissolved in 100 grams of water at 90 degrees celsius until the sloution is saturated. If the solution is then cooled to 45 degrees celsius, how many grams of Ba(OH)2 will precipitate out of the solution?
Propose a reasonable reaction for the sodium hypochlorite oxidation of 3-hetpanol. Give the IUPAC name of expected product. What other oxidizing agents may be used to carry out oxidation
Identify the limiting reagent for the given combination of reactants. Calculate how many grams of whatever substance will be in excess and how many grams of HF will be made.
What is the molar weight of the compound. Note: the freezing point depression constant of water is 1.86 oC/m
An equilibrium mixture at 225 degrees contains 0.14M NH3 and0.19 M H2 for the reaction of 3H2+N2=2. If the Kc at this temp is 1.0*102, what is the equilibrium concentration of N2
2kclo3>2kcl+3o2 a 3.0 mol sample of kclo3 was decomposed, how many moles of O2 are formed asumming 100% yield
Calculate the kinetic energy in joules of a 1400kg automobile moving at 12m/s. Convert this energy to calories. What happens to this energy when the automobile brakes to a stop
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