The equation for a reversible reaction used in industry to convert methane to hydrogen is shownbelow. CH4(g) + H2O(g) → CO(g) + 3H2(g), AH = +210 kJ. Which statement is always correct about this reaction when equilibrium has been reached? The concentrations of methane and carbon monoxide are equal. The amount of hydrogen is three times the amount of methane. The value of AH for the reverse reaction is -210 kJ. The rate of the forward reaction is greater than the rate of the reverse reaction.

The equation for a reversible reaction used in industry to convert methane to hydrogen is shownbelow. CH4(g) + H2O(g) → CO(g) + 3H2(g), AH = +210 kJ. Which statement is always correct about this reaction when equilibrium has been reached? The concentrations of methane and carbon monoxide are equal. The amount of hydrogen is three times the amount of methane. The value of AH for the reverse reaction is -210 kJ. The rate of the forward reaction is greater than the rate of the reverse reaction.

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 134IP: Nitromethane, CH3NO2, can be used as a fuel. When the liquid is burned, the (unbalanced) reaction is...

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Nitromethane, CH3NO2, can be used as a fuel. When the liquid is burned, the (unbalanced) reaction is mainly CH3NO2(l) + O2(g) CO2(g) + N2(g) + H2O(g) a. The standard enthalpy change of reaction (Hvan ) for the balanced reaction (with lowest whole-number coefficients) is 1288.5 kJ. Calculate Hf0 for nitromethane. b. A 15.0-L flask containing a sample of nitromethane is filled with O2 and the flask is heated to 100.C. At this temperature, and after the reaction is complete, the total pressure of all the gases inside the flask is 950. torr. If the mole fraction of nitrogen (nitrogen) is 0.134 after the reaction is complete, what mass of nitrogen was produced?
Consider the reaction H2(g)+Br2(g)2HBr(g) where H = 103.8 kJ/mol. In a particular experiment, equal moles of H2(g) at 1.00 atm and Br2(g) at 1.00 atm were mixed in a 1.00-L flask at 25C and allowed to reach equilibrium. Then the molecules of H2 at equilibrium were counted using a very sensitive technique, and 1.10 1013 molecules were found. For this reaction, calculate the values of K, G, and S.
9.83 A student performing a calorimetry experiment combined 100.0 mL of 0.50 M HCl and 100.0 mL of 0.50 M NaOH in a coffee cup calorimeter. Both solutions were initially at 20.0°C, but when the two were mixed, the temperature rose to 23.2°C. (a) Suppose the experiment is repeated in the same calorimeter but this time using 200 mL of 0.50 M HCl and 200.0 mL of 0.50 M NaOH. Will the T observed he greater than, less than, or equal to that in the first experiment, and why? (b) Suppose that the experiment is repeated once again in the same calorimeter, this time using 100 mL of 1.00 M HCl and 100.0 mL of 1.00 M NaOH. Will the T observed he greater than, less than, or equal to that in the first experiment, and why?
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