Speed, speed, proportion, concentration, inverse ratio.
Problem solving process:
Reaction rate = k * (a 2) * (1/b)
After b rises 100%, b' = (1+ 100%) b = 2b.
In order to keep the reaction rate unchanged, k * (a 2) * (1/b) = k * (a' 2) * (1/b').
If k is omitted, it is replaced by b', (a 2) * (1/b) = (a' 2) * (1/2b).
B rounded, a' 2 = 2 * (a 2)
Root numbers on both sides, A'= root number 2 * a.
The root number 2 = 1.4 14, so it increased by 40%.
So choose (c)
I hope it is helpful to you and I hope to adopt it ~ ~ ~