The rate of a certain chemical reaction is directly proportional to the concentration of chemical B present and inversely proportional to the concentration of chemical A present. If the concentration of chemical B present is increased by 50 percent, which of the following is closest to the percent change in the the concentration of chemical B required to keep the reaction rate unchanged.	Choose the correct answer:
A) 100 % decrease	B) 30% decrease	C) 40% decrease	D) 50% increase	E) 60% increase
Let's say here is the formula of how A and B affects the reaction speed:   rate = B/A   After the concentration A is increased by 50%, the percentage of A   become 1.5A, to keep 'rate' the same, need to have 1.5B.   Which means B increased by 50%   Answer : 50% increase
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The rate of a certain chemical reaction is directly proportional to the concentration of chemical B present and inversely proportional to the concentration of chemical A present. If the concentration of chemical B present is increased by 50 percent, which of the following is closest to the percent change in the the concentration of chemical B required to keep the reaction rate unchanged.