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Equilibrium constant for the reaction PCL5PCL3+CL2 is 0.0205 at 230°C and 1 atmospheric pressure if at equilibrium concentration of PCL5is 0.235 moles liter-1and that of CL2= 0.028 moleslit-1 then conc. of PCL3 at equilibrium is

A. 0.0174

B. 0.174

C. 0.0348

D. 1.74

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