The rate of a certain chemical reaction is directly proportional to the concentration of chemical A present and inversely proportional to the concentration of chemical B 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 A required to keep the reaction rate unchanged.	Select the correct option:  A) 100 % decrease  B) 60% decrease  C) 30% decrease  D) 40% increase  E) 50% increase
Let's say here is the formula of how A and B affects the reaction speed:   rate = A/B   After the concentration B is increased by 100%, the percentage of B   become 2B, to keep 'rate' the same, need to have 2A being doubled.   Which means A increased by 100%.   100 % decreasenswer : 100 % decrease
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The rate of a certain chemical reaction is directly proportional to the concentration of chemical A present and inversely proportional to the concentration of chemical B 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 A required to keep the reaction rate unchanged.