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Consider the following equilibrium for which H = 75.54 kJ: 2 NOCl(g) 2 NO(g) + Cl2(g) If a mixture of the gases involved in this reaction is allowed to come to equilibrium, and some NOCl is removed from this equilibrium mixture, decreasing the partial pressure of NOCl, what will the reaction do in response to this change, and how will the value of K (the equilibrium constant) be affected? a) The reaction will shift toward products with no change in K. b) The reaction will shift toward products with a decrease in K. c) The reaction will shift toward products with an increase in K. d) The reaction will not shift and the value of K will not change. e) The reaction will shift toward reactants with no change in K.
Calculate the standard reduction potential for the X half-reaction. The standard reduction potential of the copper half-reaction is 0.52 V. (Hint, write the half-reactions and the overall chemical equation for the spontaneous reaction.)
A gaseous mixture contains 420.0 Torr of H2(g), 391.3 Torr of N2(g), and 79.5 Torr of Ar(g). Calculate the mole fraction, X, of each of these gases.
Consider a stoppered flask containing benzene, iodine, and air, which has reached equilibrium at 298K. Which one of the following statements concerning the system at equilibrium is true?
Explain why the extrapolated temperature is used to determine the maximum temperature of the mixture rather than the highest record temperature in the experiment.
600 torr contains 50.0% Helium and 50.0% Xenon by mass. What are the partial pressures of the individual gasses?
22.4 liters of a gas weighs 70g at S.T.P. Calculate the weight of the gas if it occupies a volume of 20 liters at 27C and 700mm Hg of pressure
A lactic acid/lactate ion buffer solution contains 0.29 M HC3H5O3- and 0.80 , respectively. The Ka value of lactic acid is 1.4x10^-4. Calculate the pH of the buffer.
At what tempature should 0.5 moles of nitrogen be held to maintain a pressure of 125 kpa in a 1.0L closed sealed container
In each of the following groups of substances, pick the one that has the given property. Explain your reasoning for each.
Determine the molarity of a solution made by dissolving 20.0 g of NaOH in sufficient water to yield 436 mL of solution.
What is the Henry's law constant for the gas if the partial pressure of the gas in air is .0088 atm?
Suppose a 5.00 L sample of O2 at a given temperature and pressure contains 2.73 × 1023 molecules. How many molecules would be contained in 5.00 L H2 at the same temperature and pressure.
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