An equal volume of ethylene oxide of concentration 2.5 kmol/m and water was mixed in a batch rector (Capacity: 1 Litre) to produce ethylene glycol. The reaction was carried out isothermally and the concentration of ethylene glycol was measured at various times as shown below. Estimate the rate constant for this concentration-time data. Solve the problem by graphical method. Time (min) 0.5 1.0 1.5 2.0 3.0 4.0 6.0 10.0 Concentration of Ethylene glycol (kmol/m) 0 0.145 0.270 0.376 0.467 0.610 0.715 0.848 0.99

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