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Styrene is produced by catalytic dehydrogenation of ethyl- benzene at high temperature in the presence of superheated steam.
(a) Find ÄH°rxn, ÄG °rxn, and ÄS °rxn, given these data at 298 K:
(b) At what temperature is the reaction spontaneous?
What are Delta G and K at 600 degrees?
The reaction reaches equilibrium as well as the absorbance is found to be 0.352 using a spectrophotometer. If the proportionality constant between absorbance as well as concentration of FeSCN2+ is known to be 3553, compute the equilibrium constant..
Dilantin is formulated as the sodium salt of phenytoin. Draw the structure of the product on addition of one equivalent of sodium hydroxide to phenytoin.
an ore of barium contains baco3. a 1.224 g sample of the ore was treated with hcl to dissolve the baco3. the resulting
What is the pH of a buffer solution that is 0.15 M chloroacetic acid and 0.10 M sodium chloroacetate? Ka = 1.3x10^-3.
A laser is emitting photons with a wavelength of 375.0 nm. Explain what is the energy for one mole of these photons? For Planck's constant, use a value of 6.626x10-34 J s.
A sealed container holding 0.0255L of an ideal gas at 0.983 atm and 71C is placed into a refrigerator and cooled to 37C with no change in volume
Hydrochloric acid (58.0mL of 0.235M) is added to 212.0mL of 0.0567M Ba(OH)_2 solution. What is the concentration of the excess H^+ or OH^- ions left in this solution
The mens world record for swimming 1500.0 m in a long course pool is 14 min 34.56 s. how many seconds would it take to swim 0.400 miles
Many homeowners treat their lawns with CaCO3(s) to reduce the acidity of the soil. Write a net ionic equation for the reaction of CaCO3(s) With a strong acid.
The frequency factor as well as the activation energy for a chemical reaction are A=8.0x10-12 cm3/(molecule*s) and Ea=15.7 kJ/mol at 309 K, respectively. Find out the rate constant for this reaction at 309 K. Give answer in cm3/(molecule*s)
A solution is 0.0100 M in Pb2+ ions. If 0.103 mol of solid Na2SO4 is added to 1.00L of this solution (with negligible volume change), what percent of the Pb2+ ions remain in solution.
you need to make an aqueous solution of 0.180 m sodium sulfate for an experiment in lab using a 250 ml volumetric
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