DATE:-o301S MULTIPLE CHOICE (2 points each) rate law for the reaction, A + B C i
ID: 714774 • Letter: D
Question
DATE:-o301S MULTIPLE CHOICE (2 points each) rate law for the reaction, A + B C is rate eklAPI What happens to the rate when the concentration of B is doubled? a. the rate doubles c. the rate is increased eightfold d. the rate is increased ninefold b.the rate quadruples e. the rate is increased sixteenfold Consider the reaction, AB, The rate of the reaction is 1.6 x 10-2 Ms1 when the concentration of .40 M. What is the rate constant if the reaction is second order in A? 1 x102 M b. 0.046 s1 (d)0.10 M-1s1 a. 0.13 M1s1 04h 1.5 x 104 Ms1 alculate the rate of production of oxygen from the reaction, 2N205 (g) 4NO2 (g) + 02 (g) the interval from t = 800 s to t = 1600s uring Ise the following data [o2] Time 800 s 1600 s 0.48 MExplanation / Answer
The difference in O2 concentration must be divided by the difference in the time it took to reach it.
k = [O2] 2 - [O2] 1 / t2 - t1 = (0.48 - 0.24) M / (1600-800) s = 3x10 ^ -4 M / s
and can be expressed as a function of minutes:
k = 3x10 ^ -4 M / s * (60 s / 1 min) = 0.018 M / min.
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