Time and concentration data were collected for the reaction A ⟶ products A⟶products t (s) [A] (M) 0 0.52 0.52 20 0.43 0.43 40 0.35 0.35 60 0.29 0.29 80 0.23 0.23 100 0.19 0.19 The blue curve is the plot of the data. The straight orange line is tangent to the blue curve at t = 40 s. t=40 s. Approximate the instantaneous rate of this reaction at time t = 40 s.

Question

Chemistry

Amirah Oconnell

24 February, 12:44

Time and concentration data were collected for the reaction A ⟶ products A⟶products t (s) [A] (M) 0 0.52 0.52 20 0.43 0.43 40 0.35 0.35 60 0.29 0.29 80 0.23 0.23 100 0.19 0.19 The blue curve is the plot of the data. The straight orange line is tangent to the blue curve at t = 40 s. t=40 s. Approximate the instantaneous rate of this reaction at time t = 40 s.

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Bugsy · Answer 1

instantaneous rate at 40 s = 0.0035 M / s.

Explanation:

Instantaneous rate at 40 s is the slope of the line (tangent to the curve)

= Δp/Δt

From, the straight orange line

ΔP = (0.48 - 0.16) M.

Δt = (92 - 0) s

Now, instantaneous rate at 40 s

= 0.48 - 0.16/92 - 0

instantaneous rate at 40 s = 0.0035 M / s.