Sample Problem 16.1
PLAN:
SOLUTION:
Expressing rate in terms of changes in concentration with time
(a) Express the rate in terms of changes in [H2], [O2], and [H2O] with time.
(b) If [O2] decreases at 0.23 mol/L/s, at what rate is [H2O] increasing?
Choose [O2] as the reference since its coefficient is 1. For every molecule of O2 that disappears, two molecules of H2 disappear and two molecules of H2O appear, so [O2] decreases at one-half the rates of change in [H2] and [H2O].
0.23 mol/L.s
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