Acetic acid and ethanol react to form ethyl acetate and water, like this: HCH,CO

Question

Acetic acid and ethanol react to form ethyl acetate and water, like this: HCH,CO2(aq)-C2H5OH(aq) ? C2H,CO2CH3(aq)+ H2O() Imagine 246. mmol of C2HCO2CH3 are removed from a flask containing a mixture of HCH3CO2, C2H;OH, C/HCO2CH3 and H2O at equilibrium, and then answer the following questions Zero Greater than zero, but less than the rate of the forward reaction Greater than zero, and equal to the rate of the forward reaction Greater than zero, and greater than the rate of the forward reaction Zero Greater than zero, but less than the rate of the forward reaction Greater than zero, and equal to the rate of the forward reaction Greater than zero, and greater than the rate of the forward reaction Zero Greater than zero, but less than the rate of the forward reaction. What is the rate of the reverse reaction before any C2HsCO2CH3 has been removed from the flask? What is the rate of the reverse reaction just after the CoHsCO CH has been removed from the flask? What is the rate of the reverse reaction when the system has again reached equilibrium? O Greater than zero, and equal to the rate of the forward reaction Greater than zero, and greater than the rate of the forward reaction None Some, but less than 246. mmol 246. mmol More than 246. mmol How much less C2H5CO2CH3 is in the flask when the system has again reached equilibrium

Explanation / Answer

For the given esterification reaction,

Rate of reverse reaction before any C2H5CO2CH3 is removed : greater than zero and equal to forward reaction rate.

Rate of reverse reaction just after C2H5CO2CH3 is removed : greater than zero but less than forward reaction rate.

Rate of reverse reaction when the system reattains equilibrium : greater than zero and equal to forward reaction rate.

How much less C2H5CO2CH3 is on the flask : lesser by 246 mmol.

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