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 formation of HBr at 50 s.

FREE Expert Solution

An instantaneous reaction rate is the rate at a particular moment in the reaction and is usually determined graphically (slope of tangent line) and can be calculated as:


rate=∆  ∆t

Δ[  ] = change in concentration
Δt = change in time


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Problem Details

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 formation of HBr at 50 s.

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