Problem: Consider the following reaction: H2(g) + Br2(g) → 2HBr. The graph below shows the concentration of Br2 as a function of time.Use the graph to calculate the instantaneous rate of the reaction at 25 s.

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Consider the following reaction: H2(g) + Br2(g) → 2HBr. The graph below shows the concentration of Br2 as a function of time.
A graph of time, in seconds, versus concentration, in molars. The initial concentration is one molar, then decraeses linearly at a rate of point one molar per ten seconds for the first thirty seconds. It then begins to curve with upward concavity, having a concentration of point six molar at fifty seconds.

Use the graph to calculate the instantaneous rate of the reaction at 25 s.

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Our tutors have indicated that to solve this problem you will need to apply the Instantaneous Rate of Change concept. If you need more Instantaneous Rate of Change practice, you can also practice Instantaneous Rate of Change practice problems.