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what does it mean to manipulate the solubility of insoluble organic compounds by salt formation? like how does this happen
sample of amygdalin yields alpha hydroxyphenylacetic acid that consists of 70% of the R isomer and 30% of its enantiomer. What is the specific rotation of this mixture? The specific roation of pure (R)-alpha-hydroxyphenylacetic is -154.
If the density of ocean water at a depth of 10,000 m is 1.071 g/ml and if 29 g of water at that depth contains 184 mg of potassium chloride, what is the molarity of potassium chloride in the sample
Consider the following standard reduction potentials in acid solution: Cr3+ + 3e- ? Cr Eo = -0.74 V, Co2 + 2e- ? Co Eo = -0.28 V, MnO4 + 8H+ + 5e- ? Mn2+ + 4H2 Eo = +1.51 V
Calculate the heat evolved in kilojoules by the formation of the solution. Calculate the heat evoled per mole of sulfuric acid. Use n(changeH) = -(mCchangeT)
If the 0.020 moles of HCl were added to 250 ml of de-ionized water instead of the buffer, what would be the pH be? Does this tell you if the buffer successful prevents large changes in pH
The figure shown below shows a typical titration curve for 0.1 M NaOH with 40 mL of 0.05M oxalic acid (H2C2O4). The first equivalent point is ~ at 9 .0 mL and the second equivalent point is at ~18 mL.
calculate the grams of deposit in the following situations: a) In the form of Tl2O3 (solid) on an anode? (b) as the element Tl (solid) on a cathode?
Nicotine is responsible for the addictive properties of tobacco. Assume Kb1= 1.05 x 10^-6 and Kb2= 1.32 x 10^-11. Determine the pH of a 0.00120 M solution of nicotine.
Assume that fructose is a molecular solid and does not ionize when it dissolves in water.
A trainee in a medical lab will be released to work on her own results agree with those of an experienced worker at the 95% confidence level
What gas escaped during the sodium bicarbonate washing. Write balanced equations for two reactions that took place during this operation.
Calculate the vapor pressure of a solution made by dissolving 109 grams of glucose
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