Please help with chemistry hw?

Determine the average rate of change of B from t=0 s to t=222 s.

A—–> 2B

Time(s) Concentration of A

0 —— —– 0.650

111———- 0.400

122 —- —– 0.150

1 Answer

  • rateA = Δ(A)/Δt = (0.150 M – 0.650 M) / (122 s – 0 s) = –0.004098 M/s

    rateB = –2 x –0.004098 M/s = 0.008196 M/s***

    multiply by -2 to get reaction rate to become a positive number

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