# Problem: Consider the following reaction: C4H8 (g) → 2 C2H4 (g) The following data were collected for the concentration of C4H8 as a function of time: A) What is the average rate of the reaction between 0 and 10s?B) What is the average rate of the reaction between 40 and 50s?C) What is the rate of formation of C2H4 between 20 and 30 s?

###### FREE Expert Solution

We’re being asked to calculate the average rate of the reaction for the following reaction:

C4H8 (g) → 2 C2H4 (g)

Recall that for a reaction aA  bB, the rate of a reaction is given by:

$\overline{){\mathbf{Rate}}{\mathbf{=}}{\mathbf{-}}\frac{\mathbf{1}}{\mathbf{a}}\frac{\mathbf{\Delta }\mathbf{\left[}\mathbf{A}\mathbf{\right]}}{\mathbf{\Delta t}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{b}}\frac{\mathbf{\Delta }\mathbf{\left[}\mathbf{B}\mathbf{\right]}}{\mathbf{\Delta t}}}$

where:

Δ[A] = change in concentration of reactants or products (in mol/L or M), [A]final – [A]initial

Δt = change in time, tfinal – tinitial

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###### Problem Details

Consider the following reaction: C4H8 (g) → 2 C2H4 (g) The following data were collected for the concentration of C4H8 as a function of time:

A) What is the average rate of the reaction between 0 and 10s?

B) What is the average rate of the reaction between 40 and 50s?

C) What is the rate of formation of C2H4 between 20 and 30 s?