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    STUDIA CHEMIA - Issue no. 1-2 / 1998  
         
  Article:   SIMULTANEOUS DETERMINATION OF RATE CONSTANTS FOR FIRST ORDER CONSECUTIVE IRREVERSIBLE REACTIONS.

Authors:  ALEXANDRA RUSTOIU-CSAVDARI, IOAN BÂLDEA, DOINA PASERE. 		 
       
         
  Abstract:  A method for simultaneous experimental determination of rate constants for a first-order, two stage, irreversible process is proposed. It is based on the monitoring of a commun product.The first and second rate coefficient are determined at small and high reaction degrees, respectively. The obtained values are independent from each other. The method is ilustrated for the acvation of trans-dibromo-bis-dymethylglyoximato-cobalt (III) acid. Its evolution was monitored by potentiometrical means. Kinetic parameters are reported for a variety of experimental conditions . Activation parameters have been calculated and a dissociative monomolecular substitution mechanism is proposed for both the stages.  
         
     
         
         
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