Question

1. Graphical Analysis (6 p). Using only the D2L EXCEL data for the UNKNOWN you are assigned to perform a graphical analysis. Paste-in all the graphs for a complete analysis. Include the equation of the line and the value for each Y-0.0031x+0.7184 R^2=0.9604 Lambda max(nm): 262 Molar absorbtivity (M^-1 cm ^-1): 7.19E+04 Temp (celcius): 24 abs vs time (hrs) 1.000 y=-0.0031x +0.7184 R = 0.9604 abs 0.600 0.400 0.200 0.000 100 150 200 250 time (hrs) • abs ....... Linear abs) 2. Results (6 p). For your unknown clearly state in complete sentences the reaction order, n, and the rate constant, k, at 24 °C (what you know). Then clearly explain how you determined the reaction order and the rate constant at 24 °C (how you know it). The reaction order is O and the rate constant 4.31 x 10^-9 MA-154-1. The absorbance (A) of a sample is proportional to the concentration. So the straight line equation can be re written as Alt-A[0)-0.0031t To find rate constant: Cit) C(O)-(0.0031/8) Cit)-CO) -(0.0031/7.19x1044) Cit)-CO-4.31x104_9 3. Shelf Life at 0.01 C (8 p). Assuming the reaction solution does not freeze at 0.01 C, calculate the ts (shelf-life) for your unknown at 0.01 C assuming the activation energy, for the process is 73 kl/mol. Show all work. Symbolically state the equations you are using defining all variables and constants. (Hint, the material in US M3 under Temperature Effects may prove useful).

please help with number 3 and check if my reaction order and rate constant are correct for number 2 as well

Answer 1