Question

according to the graph, what happens to the concentration of e over time? reaction: d ⇌ e graph of concentration (m) vs. time (sec) with es curve decreasing then leveling, ds curve increasing then leveling options: it increases and then levels out. it increases consistently. it decreases and then levels out. it decreases consistently.

Explanation:

Step1: Analyze the graph for E

The graph for E (red line) starts at a higher concentration, decreases over time initially, and then becomes horizontal (levels out).

Step2: Match with options

• "It increases and then levels out" is for D (purple line), not E.
• "It increases consistently" is incorrect as E's concentration drops.
• "It decreases and then levels out" matches E's graph (decreases then stabilizes).
• "It decreases consistently" is wrong as E stops decreasing and levels out.

Answer:

It decreases and then levels out.