Question

1. Derive the integrated rate law for R=k[A]* for this reaction A B. What would be plotted for this equation? What does the slope equal? 2. (a) What are the activities and activity coefficients for isopropanol and n- decane at 25°C at 0.55 mole fraction of isopropanol? P* Isoprop = 1008 torr, P'dex= 48.3 torr, Pisoprop = 790 torr, and Pdec = 11.5 torr (5 pts.) (b) What is the AGmix for a system that mixes 60 grams of C:Hs and 28 g of C6H6? Assume ideal gas behavior at a temperature of 68°C. (5 pts.) 3. At some temperature, the vapor pressure of pure acetone is 0.556 barr and that of pure hexane is 0.378 barr. What are the equations for the dew point line nel acetone as A and hexane as B? What is the mole fraction of liquid acetone and liquid hexane when the total pressure is 0.487 bar? What are the partial pressures of each? What are the mole fractions of each in the gas phase? 4. What is the activation energy in kJ/mol and the frequency factor if a plot of In(k) vs. 1/T produced a linear line with the following equation: y=-989 x + 7.48. Note T has units of K and k has units of M's. What does a high activation energy mean and when will a reaction occur?

Answer 1

R = K [A] derived as The rate ear can be d [A ] = K[A]+ dt d[A ] = -kodt. [A74 Integrating both side. lola [ d[A Ik dt [A] = -kt Ao -kt la 3 A ) - = 3K Here initial Concentration. Ao = A = final concentration

It we plot line with 1 vs t slope, 3k we will get straight and intercept 3 Slope = 3K = intercept. 2
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