30. consider the interconversion of a molecules (green spheres) and b molecules (gold spheres) according to…

30. consider the interconversion of a molecules (green spheres) and b molecules (gold spheres) according to the reaction a → b. each of the following series of pictures represents a separate experiment in which time increases from left to right. which of these experiments show mixtures that have reached equilibrium? increasing time (1) (2) (3) (4) a) all of the experiments except experiment (1) b) all of the experiments except experiment (2) c) all of the experiments except experiment (3) d) all of the experiments except experiment (4) (end)

30. consider the interconversion of a molecules (green spheres) and b molecules (gold spheres) according to the reaction a → b. each of the following series of pictures represents a separate experiment in which time increases from left to right. which of these experiments show mixtures that have reached equilibrium? increasing time (1) (2) (3) (4) a) all of the experiments except experiment (1) b) all of the experiments except experiment (2) c) all of the experiments except experiment (3) d) all of the experiments except experiment (4) (end)

Answer

Explanation:

Step1: Recall equilibrium concept

At equilibrium, the concentrations of reactants and products remain constant over time.

Step2: Analyze experiment (1)

As time increases, the number of A and B molecules keeps changing. So it is not at equilibrium.

Step3: Analyze experiment (2)

The composition of A and B molecules stabilizes as time progresses, indicating equilibrium.

Step4: Analyze experiment (3)

The amounts of A and B molecules do not change further as time goes on, showing equilibrium.

Step5: Analyze experiment (4)

The ratio of A and B molecules remains constant with increasing time, meaning it is at equilibrium.

Answer:

A. all of the experiments except experiment (1)