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19 Nov 2019
3. [2 pts] Dit-butyl peroxide (DTBP) is used as a catalyst in the manufacture of polymers. In the gas state, DTBP decomposes into acetone and ethane by a first-order reaction shown below. CH,502 () > 2 CHCOCH, (8) + CHHCH, (g) Partial pressures of DTBP are plotted as a function of time in the figure below, and the half-life of the reaction is indicated. BOO 700 - A SOO 400 A 30 2OO LOND 4080 20 160 200 240 2o Time , min. If the reaction is started with pure DTBP at 147 °C and 800.0 mmHg in a flask of constant volume. a) What is the value of the rate constant k? b) At what time will the partial pressure of DTBP be 50 mmHg? c) What will the pressure of DTBP be at t= 125 min ? d) Determine the time at which the total pressure is 2100 mmHg.
3. [2 pts] Dit-butyl peroxide (DTBP) is used as a catalyst in the manufacture of polymers. In the gas state, DTBP decomposes into acetone and ethane by a first-order reaction shown below. CH,502 () > 2 CHCOCH, (8) + CHHCH, (g) Partial pressures of DTBP are plotted as a function of time in the figure below, and the half-life of the reaction is indicated. BOO 700 - A SOO 400 A 30 2OO LOND 4080 20 160 200 240 2o Time , min. If the reaction is started with pure DTBP at 147 °C and 800.0 mmHg in a flask of constant volume. a) What is the value of the rate constant k? b) At what time will the partial pressure of DTBP be 50 mmHg? c) What will the pressure of DTBP be at t= 125 min ? d) Determine the time at which the total pressure is 2100 mmHg.
Nestor RutherfordLv2
4 Mar 2019