Question

Pressure vs Time Rate Law The decomposition of ethanol at some constant temperature (above 500°C), over a copper surface, C2H5OH(9) → CH3CHO(g) + H2(9) was studied by monitoring the total pressure with time. The following data were obtained: t(s) Ptotal (torr) 103 0 56 112 142 244 307 489 564 152 181 193 What will be the total pressure at t = 602 s? 1 pts Submit Answer Tries 0/8 What is the rate constant (k)? (Include appropriate units.) 1 pts Submit Answer Tries 0/8

Please include all work on how to get to the answer!!

Answer 1

I plotted the data using a graph plotter. After graphing, I saw an almost straight line indicating a direct proportion. it means that the graph is plotted for the zero order reaction .
220 210 200 190 180 170 160 150 140 130 120 PRESSURE (tor) 110 100 90 SO 70 60 50 40 30 20 10 0 0 50 100 150 200 250 300 350 400 450 500 550 600 TIME(S)

Rate= K[Aya С2Н2ОН where, rate constant • (A is concentration is the reaction . Kis e reactant order a Rate = k [ P Canon lo =KI Rate= k the slope of the of the line (from graph) Constant. (K) value Rate Slope = Ye - y H-21, Choose y & G, N, e na from the given data ez A, 156, 112) B (489, 181) + Slobe = K= 0.1593 181 - 112 489-56 69 433 Rate Constant is 0.1593