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- In any manufacturing process, reaction monitoring ensures that a chemical reaction proceeds as expected. Table 1 shows the monitoring data for the formation of chlorohexane, collected using a technique called gas chromatography. Note that the concentrations of the chlorohexane solutions are given in millimoles per litre (mmol l–1). The abbreviation mM (millimolar) is frequently used. Plot a graph of the data in Table 1. The graph should be drawn on graph paper or use fine grid if it’s drawn on Excel. Elapsed Time/Hours Concentration of Chlorohexane/mM 0 0 2 40 4 65 6 80 8 90 10 95 12 99The compound diborane (B2H6) was at one time considered for use as a rocket fuel. Its combustion reaction is B2H6(g) + 3 O2(l) → 2 HBO2(g) + 2 H2O(l). The fact that HBO2, a reactive compound, was produced rather than the relatively inert B2O3 was a factor in the discontinuation of the investigation of the diborane as a fuel. What mass of liquid oxygen (LOX) would be needed to burn 234.4 g of B2H6? Answer in units of g. (part 2 of 2) What mass of HBO2 is produced from the combustion of 94.7 g of B2H6? Answer in units of g.The compound diborane (B2H6) was at one time considered for use as a rocket fuel. Its combustion reaction is B2H6(g) + 3 O2(l) → 2 HBO2(g) + 2 H2O(l) The fact that HBO2, a reactive compound, was produced rather than the relatively inert B2O3 was a factor in the discontinuation of the investigation of the diborane as a fuel. What mass of liquid oxygen (LOX) would be needed to burn 234.4 g of B2H6? Answer in units of g.
- (a) What is the difference between chlorofluorocarbonsand hydrofluorocarbons? (b) Why are hydrofluorocarbonspotentially less harmful to the ozone layer than CFCs?The density of moist air (ideal gas mixture) at 20°C temperature and 700 mmHg pressure was found to be 1.1 g/lt. Calculate the partial pressure of water vapor in this air. Additional data: MA(H2O)18, MA (Air)29A time-dependent pressure profile for the reversible reaction between A and B gases to produce C gas is shown below. The plot is for the reaction being completed at 375 K. Answer the two questions about this plot. Give the balanced Pressure as a Function of Reaction Time equation in the box provided. -PA 1.0 Pc P, atm PR B time When this same reaction is completed at 475 K, Kp = 5.7. Does this indicate the reaction has AH > 0 or AH < 0? Explain your choice. Your answer
- Landfills usually contain a large deposit of various organic material that degrade over time producing a plethora of secondary pollutants. These compounds are displaced by the action of leachate and eventual accumulate in the leachate pond. One such organic molecule is compound I drawn below: Degradation of the organic molecule in the leachate pond occurs by a combustion-type reaction consuming dissolved oxygen in the water. Write a balanced equation representing a complete combustion-type reaction for compound I using the formula assessed in part (c).Describe the principle of electrostatic precipitator and cyclone separator. How these equipment/technology can be useful in mitigating source gaseous pollution from industry?Why does the collision gas have to be inert?
- Why is the rate of flow of exhaust gases over a catalytic converter important?A commercial 737 jet transporting 143 passengers and 5 crew members from Kansas city (MCI) to Baltimore (BWI) burned 11800 lb. of Jet A fuel. Jet A fuel is kerosene based, consisting primarily of CnH2n+2 hydrocarbons, with n = 6 to 16, so the Carbon:Hydrogen ratio is close to 1:2. During this flight How much CO2 would be released into the atmosphere if those passengers and crew made the trip instead, in pairs, in hybrid cars at 50 miles per gallon. (Assume the density of gasoline to be 0.75kg L-1 and that carbon and hydrogen dominate the composition in a ratio 1:2. The road trip is 1082 miles.The 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCS) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. (1) CIO(g) + 0;(g) Cl(g) + 20,(g) AHxn = -122.8 kJ AHan = -285.3 kJ (2) 203(g) → 30,(g) (3) 0,(g) + Cl(g) → CIO(g) + 0,(g) AHn = ?