22. According to the passage, classical chemical reactions and tunneling reactions are alike in which of the following ways?
In both types of reactions, reacting molecules have to rise over the barrier between the two wells.
In both types of reactions, a transition is made from the bottom of one potential well to the bottom of another.
In neither type of reaction does the height of the barrier between the wells remain constant.
In neither type of reaction does the rate of a chemical reaction depend on its activation energy.
In both types of reactions, reacting molecules are able to go through the barrier between the two wells.
23. According to the Arrhenius equation as discussed in the passage, which of the following statements about chemical reactions is true?
Chemical reactions are less likely to occur at temperatures close to absolute zero.
In some cases the rate of a chemical reaction is related to temperature and in other cases it is not.
Chemical reactions frequently occur at a few degrees above absolute zero, but they are very unpredictable.
The rate of a chemical reaction depends on many other factors besides temperature.
Chemical reaction rate and temperature are not related.
【gre考试阅读真题解析(A)】相关文章:
最新
2016-03-01
2016-03-01
2016-03-01
2016-03-01
2016-03-01
2016-03-01