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Explain what observed rotation is expected when a 1.18 M solution of (R)-2-butanol is mixed with an equal volume of a 0.590 M solution of racemic 2-butanol, and the resulting solution is examined in a sample container that is 1 dm long? And the specific rotation of (R)-2-butanol is -13.9 degrees mL g-1 dm-1.
Give the general Henderson-Hasselbalch equation and sketch the plot it describes (pH against amount of NaOH added to a weak acid). On your curve label the pKa for the weak acid, and indicate the region in which the buffering capacity of the system..
A buffer is prepared with 0.0400 moles of an acid (Ka=1.5x10^-4) and .025 moles of base and 400 mL water. Calculate the pH.
for each of the three types of polarization,briefly describe the mechanism by which dipoles are induced and/or oriented by the action of an applied electric field. For solid lead titanate, gaseous neon, diamond
Predict whether the following will result in an increase or decrease in entropy and justify your reasoning. Desalination of water
A blackbody emits light with a frequency of 1.54 x 1014 s-1. The total energy emitted per second at this frequency is 1.02 x 10-11 J. How many photons are emitted per second
Small quantities of oxygen can be prepared in the laboratory by heaing potassium chlorate, KClO3(s). The equation for the reaction is 2KClO3 arrow 2KCl+3O2 Calculate how many grams of O2(g) can be produced from heating 26.6 grams of KClO3(s)
A sealed container of oxygen gas has a pressure of 44.2 atm at 319.0 K. If the container is cooled to 239.0 K, what is the new pressure of the gas
You have 200ml of a solution which is 0.2M NH3 and contains 0.23grams of NH4Cl. a. What type solution is it. b. What is the pH of the solution
the standard electrode potentials calculate the standard free energy (kJ) for the given reaction.
Ethyl acetate liquid (flask with ethyl acetate with the top cover with aluminium paper with small whole in the top and inserted inside hot water container) Was the vapor really "ideal". If not, how were calculations affected
a bright orange ceramic fiestaware plate is found to have an activity of 12.49 disintegrations per second becquerels or
a 35.00 ml solution of 0.2500 m hf is titrated with a standardized 0.1356 m solution of naoh at 25 c.a what is the ph
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