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The homogeneous decomposition of the free - radical polymerization initiator diethyl peroxydicarbonate ( DEPDC ) has been studied in supercritical carbon dioxide using and ideal
The homogeneous decomposition of the freeradical polymerization initiator diethyl peroxydicarbonate DEPDC has been studied in supercritical carbon dioxide using and ideal CSTR The concentration of DEPDC in the feed to the CSTR was Because of this very low concentration, constant fluid density can be assumed. At and a space time of min, the fractional conversion of DEPDC was At and a space time of min, the fractional conversion of DEPDC was
The rate equation for the DEPDC decomposition is believed to have the form:
What is the value of and what is the value of at
The hydrolysis of esters frequently is catalyzed by acids.
As the above hydrolysis reaction proceeds, more acid is produced and the concentration of catalyst increases. This phenomenon, known as "autocatalysis" is captured by the rate equation:
Here is the rate constant in the absence of the organic acid that is produced by the reaction. The initialinlet concentrations are listed below:
The rate constants are The reaction takes place in the liquid phase.
a Calculate the values of at fractional conversions of ester of
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