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A ground water contains dissolved CCl4 , a chlorinated solvent often used in degreasing. The water also contains some dissolved Fe2+. The half reactions for CCl4 and Fe are: CCl4(aq) + 1/2H+ + e- = 1/2CHCl3 + 1/2Cl- E0 = 0.67 Volts Fe3+ + e- = Fe2+ E0 = 0.771 Volts Could a microorganism gain any energy from an overall reaction in which it reduced CCl4 with dissolved Fe2+ as a reductant? Use the E0 data to support your argument.
A 890 mL sample of NO2 gas is at STP. If the volume changes to 644 mL and the temperature changes to 20ºC, what will be the new pressure in atmospheres?
What is the Ce 3+ concentration in a solution formed by combining 50.0 mL of 0.0500 M Ce 3+ with 50.00 mL of 0.150 M IO3-? The solubility-product constant for Ce(IO 3 )3 = 3.2 x 10 E-10.
According to Hund's Rule, how many unpaired electrons are in the valence shell of element 10?
Draw the structure of propanoic acid (propionic acid) with the approiate hydrogen bonded water molecules -- that is, put in the maximum number of water molecules that could H bond with propionic acid. Remember -- H bonds (hydrogen bonds) are indic..
Solve an equilibrium problem (using an ICE table) to calculate the of each of the pH following solutions.
Calculate the mass(in grams) of solids you must measure out to prepare 100 mL each of 0.025 M CuSO4, 0.025 M Ca(NO3)2, 0.025 M Al(NO3)3, and 0.025 M KCl.
A gas containing only CH4 and N2 is burned with air yielding a flue gas that has an Orsat analysis of CO2:8.7%, CO: 1.0%, O2:3.8%, and N2:86.5%. Calculate the percent excess air used in combustion and the composition of the CH4-N2 mixture.
Background: If aqueous NaOH is added to tert-butyl chloride acetone solution, initially the solution is basic due to the hydroxide ions from the NaOH.
Use standard enthalpies of formation to determine Horxn for: 3NO2(g) + H2O(l) ? 2HNO3(aq) + NO(g) Enter in kJ. -133.5 Find the change in internal energy for this reaction.
ICE Problem: Calculate Final Concentrations, Phosgene, COCl2 (g), is an extremely toxic gas. It was used during World War I. Today it is used to manufacture pesticides, pharmaceuticals, dyes, and polymers. It is prepared by mixing carbon monoxide ..
Proceeds at a certain temperature until the partial pressure of H2O, H2, and O2 reach 0.0500 atm, 0.00200 atm, and 0.00800 atm respectively. What is the value of the equilibrium constant at this teperature?
What is a catchy, orignal slogan for the element neon that describes one of its important uses?
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