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a. What combination of a molecular base (that is a neutral compound, not an ion!) and a salt of the conjugate acid of that molecular base should you select to prepare a buffer solution that would maintain a pH of 9.00? For full credit, explain your choice (in a simple, straightforward manner, keep your answer under 40 words and don%u2019t forget to specify a common spectator ion as the counter-ion in the salt).
b. What ratio of concentrations of the molecular base you chose in part a and its conjugate acid would be necessary to achieve a pH of exactly 9.00?
c. Describe, using one well-written sentence, a simple and practical way to make 1.00L of this buffer solution, assuming a 1.0 M solution of the molecular base is available and that the chloride salt of the conjugate acid is available as a solid. (Note: Laboratory balances are calibrated in grams and pipettes in mL, neither are calibrated in moles - hint)
Suppose a bone from an ancient human contains 17.5% of the {rm C}-14 found in living organisms. How old is the bone?
what mass of magnesium is required to produce enough gas to exert a partial pressure of .50 atm in a 50.0 mL flask at a temperature of 25.0 degrees celcius?
a gas mixture with a total pressure of 770 mmHg contains each of the following gases at the indicated partial pressures: CO2, 122 mmHg; Ar, 209 mmHg; and O2, 191 mmHg. The mixture also contains helium gas. what is the partial pressure of the heliu..
When 35.6 L ammonia and 40.5 L oxygen gas react at STP, NO(g) and water are produced. How many grams of NO(g) are produced assuming 100% yield?
Draw all the stereoisomers of 3-chloro-2-butanol. Indicate which isomers are enantiomers, which are diasteromers,
The first equivelence point is reached when 24.50 mL of base have been added. What is the molecular weight of the unknown acid?
Consider equal volumes (say 1 rm L) of a substance in the solid, liquid, and gas phases. Arrange them in order of decreasing mass. If the mass difference between samples is relatively small, rank the items as equivalent.
calculate the concentrations of all species in a .890 m sodium sulfite solution. the ionization constants for sulfurous acid are ka1= 1.4x10^-2 and ka2=6.3x10^-8
What is the mass of CO2 in one liter of water if the pressure above the water is 2 atm? (MW CO2 = 44 g/mol), Cg = kH Pg Please show steps
How many grams of potassium permanganate are needed to decolorize 1g of 2-pentane in basic solution?
Compute the boiling point of this solution: 1.00 X 10^2g C10H8O6S2(1,5-naphthalenedisulfonic acid) in 1.00 X 10^2g H2O (nonionizing solute).
Need to calculate the heat formation of products, but have heat of formation for NaCl of concentration 1mol/L.
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