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Morphine (pKb = 5.80) is the active ingredient in opium. It is used as an analgesic that directly acts on the central nervous system to alleviate pain. Morphine is on the DEA watch list as a schedule II drug under the controlled substances act.Suppose a 25.00 mL sample of 0.300 M morphine solution is titrated with a 0.115 M standard HCl solution.1. How many mL of HCl would be required to neutralize all of the base?2. What is the pH of a 25.00 mL sample of morphine (before titration)? 3. What is the pH of the sample after adding 30.00 mL of 0.115 M HCl?
4. What is the pH of the solution at the equivalence point?5. What is the pH of the solution after 5.00 mL of excess 0.115 M HCl is added?
What is the pH of a buffer prepared by adding 0.45 mol of the waek acid HA to 0.608 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66e-7
At 570. mm Hg and 25C, a gas sample has a volume of 2270 mL. What is the final pressure (in mm Hg) at a volume of 1250 mL and a temp of 175C?
consider the hypothetical tetrapotic organic acid h4org mw236gmol pka14.07 pka26.88 pka37.90pka412.10 assume you begin
Pressure was exerted with a piston on molten naphthalene at 95 degrees Centigrade. The vapor pressure of naphthalene under 1.0 bar is 2.0 kPa and its density is 0.962 g cm-3. What is its vapor pressure when the pressure on the liquid is 15 MPa?
Calculate the amount of energy that would be required to promote an electron from n=1 to n=100 in Li^2+
The enzyme, carbonic anhydrase, is a large zinc-containing protein with a molar mass of 3.00 × 104 g/mol. Zn is 0.218% by mass of the protein.
which portion of the titration curve are you in to reach pH = 7? Show your calculations to prove that dilution of 10,000 gal aniline requires 0.58 gal of this acid.
What mass of real van der waal behaving form of N2 gas is present in a 50l container at 400K under 20 atm of N2 pressure where a=1.37 litre^2 bar mole^-2 and b=0.0387 litre/mole
what features would you expect to be different when comparing the ir spectra of serine and tyrosine? provide at least
The standard enthalpy change for the reaction below is 436.4 kJ/mol. Calculate the standard enthalpy of formation of atomic hydrogen (H). H2(g)-->H(g) + H(g)
5 gram of solid calcium sulfate is added to 1 leter of pure water. what is the soncentration of dissolved sulfate once equilibrim is achieved
for the reaction represented by the equation cl2 + 2kbr 2kcl +br2 how many moles of potassium chloride are produced from 119 g of potassium bromide?
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