What is the rate of the reverse reaction before any ch3co2- has been added to the flask? 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. what is the rate of the reverse reaction just after the ch3co2- has been added to the flask? 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. what is the rate of the reverse reaction when the system has again reached equilibrium? 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. how much more ch3co2- is in the flask when the system has again reached equilibrium? none. some, but less than 246. mmol. 246. mmol. more than 246. mmol.