1a) The decomposition of ethanol at some constant temperature (above 500°C), over a copper surface, C2H5OH(g)  CH3CHO(g) + H2(g) was studied by monitoring the total pressure with time. The following data were obtained:   t (s)     Ptotal (torr) 0 120 45 131 139 154 233 177 376 212 380 213 What will be the total pressure at t = 462 s? 1b) What is the rate constant (k)? (Include appropriate units.)

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Q: What is the difference between endo and exo thermic reactions

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