Question

2) (20 points) Sucrose is readily hydrolyzed to glucose and fructose in acidic solutions. The concentration of sucrose is monitored, and yields the following data: 0 14 39 60 80 110 140 170 210 Time (min) 0.316 0.300 0.274 0.256 0.238 0.211 0.190 0.170 0.146 Sucrose (mol/L) Determine the rate law for this hydrolysis reaction, and determine the appropriate rate constant with appropriate units. What references did you use to assist you in answering this problem?

Answer 1

t ca f Ca Hooo,, + Hoo Ht CHIG OG GHID OG (sucrose) (Glucose) (fructose) Rate = k [ Cia Hoa 0,] * To find order reaction, we have to use hit and trial method. We have to check two values rate constant at different time. I they appear same. Then we order with the help of rate constant. from the table given At, t20 sucrose (Ac)-0-315 M At it = 14 min sucrose (A_120-300 11 let for pst order ont log [16] [At get the desire conc of 2 cone of k, = 2-303 7 t ki = 2-303 Ki 20:00 37 min' 14 Smin log 0-314 0-300 for, it= 39 min conc . log 0-316 0.274 8468ose Carl-0.274 M ko - 2.303 >> Ky -0.0037 min 39 min Since, ki & kq are same. of means Hydrolys's g sucrose follows ist order kinetics so, Rate law : Rate = k [Clos M2001] Rate constant: K = 0.0037 min Hence using the given the given data, we can find rate and rate constant