Question 8 (20 marks): N2Os decomposes into NO2 and NO3 with a rate constant of: k(T)=1.96x1014 exp[-10660/T] s At t 0,...
6. (a) The rate constant for the first-order decomposition of N2Os in the reaction, 2 N2Os(g)-4 NO(g)+0.(g), k-3x10-s at 25°C. What is the half-life of N20s? What will be the pressure, initially 500 bar, at 10 min after initiation of the reaction? (b) Knowing the activation energy of the above reaction is 100 kJ mor', calculate the required reaction temperature at which the reaction rate is doubled. (c) What is the conversion efficiency of N20s at 1 bar and 25...
The oxidation of nitric oxide NO + 02 =NO2 takes place in an isothermal batch reactor. The reactor is charged with a mixture containing 20.0 volume percent NO and the balance air at an initial pressure of 380 kPa (absolute). (a) Assuming ideal-gas behavior, determine the composition of the mixture (component mole fractions) and the final pressure (kPa) if the conversion of NO is 90%. (b) Suppose the pressure in the reactor eventually equilibrates (levels out) at 360 kPa. What...
QUESTION 1: 20 marks 20 points It is planned to carry out the following second-order, elementary, non- catalytic gas-phase reaction in an adiabatic CSTR: A+B_C+3D. Only A and B (no inerts) are fed to the reactor at equimolar flow rates of 150 mol/min each. The rate constant is related to the temperature by Arrhenius law as follows: k = 37.68x10^10 exp(-80000/RT) L/mol.min. The heats of formation of A, B, C and D (at 298 K) in kJ/mol are -235.3, -393.5,...
Question 6 (18 marks) (a) Given that the rate constant k for the first-order decomposition of compound X is 2.65 x 10-9 s', calculate the percentage of compound X that has decomposed in the first 2250 seconds after the reaction begins. (4 marks) (b) Consider the first order reaction: W2 → 2 Y. If [W2]=0.8 M initially and 0.17 M after 160 seconds, what will [W2] be after 350 seconds? (4 marks) (c) Data for the reaction 3A + 5B...
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Question 5: (1 point) At 390 K, the equilibrium constant, K., for the reaction below is 1.8 x 10-?. PCIs (g) - PC1; (g) + Cl2 (g) Assume a quantity of PCIs (g) is placed in a rigid 10 L vessel and the system is allowed to reach equilibrium at a constant temperature of 390 K. Identify whether each of the following statements is true or false. At equilibrium, if the vessel contains I mole of PCs (g)...
-4a 2a Arrhenius equation: k A exp(E/RT Rate Integated Rat Oder Equatisn Plat Sape Ideal gas: pV-nRT; R = 8.314 /K-mol :0.08206 atm_L/mo Xa·m/(ruml: Molarity: M ansowe (mole)/Volume of solu in L; molality m- Foe (mole/mass of solvent (in kg) Part I.Short questions: (56 pt. No explanation is needed.) 1. (4pt) For the second-order reaction below, the initial concentration of reactant A is 0.24 M. f the rate constant for the reaction is 15 x 10 M'st, what is the...
o Consider the renction 2A(g) + B(g) + 2(g) 2D(8) E(s) Suppose at time =0, the partial pressures of the reactant gases are 5 atm A, 10 atm B, and 8 atm C. After 20 minutes the partial pressure of A was found to be 1 atm. a) What is the initial total pressure in the flask at time=0? Bus P + P +++ b) What is the total pressure inside the flask after 20 minutes? Set up a start,...
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REPORT SHEET Determination of the Solubility-Product Constant for a Sparingly Soluble Salt EXPERIMENT 8 A. Preparation of a Calibration Curve Initial (Cro121 0.0024 M Absorbance 5 mL Volume of 0.0024 M K Cro Total volume 1. I mL 100 mL 2. 100ML 3. 10 mL 100ml 4. 15 mL 100 ML Molar extinction coefficient for [CrO2) [Cro,2) 2.4x100M 12x1044 2.4810M 3.6810M 0.04) 2037.37 0.85 1.13 2. 3. Average molar extinction coefficient...