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At 791K and relatively low pressures, the gas-phase decomposition of acetaldehyde (CH,CHO) is second order in acetaldehyde. The total pressure of a particular reaction mixture was found to be vary as follows: Time (min) 075 148 308 605 Total Pressure 0.500 0.583 0.641 0.724 0.808 (atm) a) Use the pressure data to determine the value of the rate constant in units of atm s b) What is the rate constant in the usual units of Ms ?
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