Question

select the correct answer from each drop-down menu. in a reversible reaction, the forward reaction takes place drop - down the reverse reaction. such a reaction, on reaching equilibrium, will have drop - down after before simultaneously with next

Explanation:

In a reversible reaction, the forward and reverse reactions occur at the same time (simultaneously) once the reaction starts. The term "after" would imply the forward reaction happens and then the reverse, which is incorrect. "Before" would mean the forward happens first and then reverse, also incorrect. So the correct option for the first blank is "simultaneously with". (Note: The second part of the question about equilibrium's effect on concentrations etc. isn't fully shown, but for the first drop - down, based on reversible reaction kinetics, forward and reverse occur simultaneously.)

Answer:

simultaneously with