KINETICS AND EQUILIBRIUM Predicting relative forward and reverse rates of reacti
ID: 707112 • Letter: K
Question
KINETICS AND EQUILIBRIUM Predicting relative forward and reverse rates of reaction Acetic acid and ethanol react to form ethyl acetate and water, like this: Imagine 233. mmol of HCH 3CO2 are removed from a flask containing a mixture of HCH3CO2 C2HsOH, ?2HsCo,C, and H2O at equi brium, and then answer the following questions Zero. Greater than zero, but less than the rate of the reverse reaction. Greater than zero, and equal to the rate of the reverse reaction Greater than zero, and greater than the rate of the reverse reaction Zero. Greater than zero, but less than the rate of the reverse reaction Greater than zero, and equal to the rate of the reverse reaction. Greater than zero, and greater than the rate of the reverse reaction. Zero Greater than zero, but less than the rate of the reverse reaction Greater than zero, and equal to the rate of the reverse reaction What is the rate of the forward reaction before any HCH3CO2 has been removed from the flask? What is the rate of the forward reaction just after the HCH CO2 has been removed from the fask? than What is the rate of the forward reaction when the system has again reached equilibrium? Greater than zero, and greater than the rate of the reverse reaction None. How much less HCHjCO2 is in the Some, but less than 233. mmol flask when the system has again reached equilibrium? 233. mmol More than 233. mmol Explanation CheckExplanation / Answer
1) before removal of ch3cooh rate of forward reaction is same as backward reaction because system is at equlibequil.at equilibrium forward and backward reaction rates are same
2)just after removal of ch3cooh rate of backward reaction will be greater than forward reaction because removal of reactant (ch3cooh) will cause equilibrium to move in bacward direction.
3)rate of forward and bacward reactions will be same.
4)some but less than 223 mmol because some of ch3cooh is fomed by bacward reaction so total loss will be less of 233.
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