1. In an experiment, a data-logger with pressure sensor was used to study the rate of decomposition of hydrogen peroxide (H2O2) in the presence of manganese (IV) oxide.
The relation between the pressure and time measured is shown in the curve below.
http://i617.photobucket.com/albums/tt257/michaelcoco_/a9bd49b3.jpg
(a) Explain why the respective rates of decomposition of hydrogen peroxide differ at points A, B and C on the curve.
關於rate of reaction的簡單化學問題
2009-07-31 6:14 am
回答 (1)
2009-07-31 9:27 am
✔ 最佳答案
At A, the concentration of hydrogen peroxide is the most concentrated among the three points, and thus the reaction rate is the fastest.At B, some hydrogen peroxide is consumed and its concentration is lowered, and thus the reaction rate is lower than that at point A.
At C, all hydrogen peroxide is consumed, the thus the reaction rate is zero.
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https://hk.answers.yahoo.com/question/index?qid=20090730000051KK02286