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Rank the following titrations in order of increasing pH at the equivalence point of the titration (1 = lowest pH and 5 = highest pH).
a. 100.0 mL of 0.100 M KOH by 0.100 M HCl
b. 100.0 mL of 0.100 M C2H5NH2 (Kb = 5.6 x 10-4) by 0.100 M HCl
c. 100.0 mL of 0.100 M HOCl (Ka = 3.5 x 10-8) by 0.100 M NaOH
d. 100.0 mL of 0.100 M NH3 (Kb = 1.8 x1 0-5) by 0.100 M HCl
e. 100.0 mL of 0.100 M HF (Ka = 7.2 x 10-4) by 0.100 M NaOH
Calculate the freezing point of a 2.00 molal solution of the nonelectrolyte glucose. The freezing point constant for water is 1.86 °C/molal.
What biochemical changes are required to convert tyrosine to (a) norepinephrine and (b) epinephrine? and 3- Some bacterial signaling systems involve kinases that transfer a phosphoryl group to a His side chain. Draw the phospho-His side chain.
Compute the Ka for the acid if the pH of the resulting solution = 6.36. and determine the pH of the resulting buffer
How many grams of water can be cooled from 36 degrees celsius to 23 degrees celsius by the evaporation of 53g of water.
In an TLC experiment with paprika, which red spot is capsanthing and which is capsorbin? Is it the one that travels the farthest or least? How can You tell?
Calculate the freezing point of the following solutions, assuming complete dissociation. Part A= 0.114mK2S Part B=20.5g of CuCl2 in 401g water Part C=6.5% NaNO3 by mass
what is the required time at 675 degrees celsious to have only 25% Austenite left during the transformation from Austenite to Pearlite?
Draw (S)-3-hexanol, then indicate the stereochemistry of the product formed when it is treated with each of the following reagents
The Haber process is very important for agriculture because it converts N2 (g) from the atmosphere into bound nitrogen which can be taken up and used by plants. The reaction is N2 + H2->NH3
the weak base methylamine is titrated with 0.10 M HNO3. Calculate the pH after 20.0 mL and 60.0 mL acid addition (HNO3).
Determine the theatrical yield if 1.56 grams of hydrogen is permitted to combines with 9.70 grams of nitrogen producing 1.43 grams of ammonia?
how many grams of iron will react with water to form iron (III)oxide and 85 liters of hydrogen gas at 19 degrees celsius & 525 torr?
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