[計量]PP1-PS142
The rate of a certain chemical reaction is directly proportional to the
square of the concentration of chemical A present and inversely to the
concentration of chemical B present.
If the concentration of chemical B is increased by 100persent, which of
the following is closet to the percent change in the concentration of
chemical A required to keep the reaction rate unchanged.
A) 100% decrease
B) 50% decrease
C) 40% decrease
D) 40% increase
E) 50% increase
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