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 100 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.
Options
A) 10 % decrease B) 50% decrease C) 40% decrease D) 30% increase E) 100% increase
Let's say here is the formula of how B and A affects the reaction speed:   rate = B/A   After the concentration A is increased by 100%, the percentage of A   become 2A, to keep 'rate' the same, need to have 2B being doubled.   Which means A increased by 100%.   Answer : 100% increase
<result>E</result>
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 100 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.