More ions form pairs when concentration of acid increases, does that decrease the speed of reaction?

Electrical conductivity decreases as an acid becomes more concentrated because more ions form pairs. However, does that affect the speed of reaction of the acid as there is a smaller concentration of Hydrogen ions?

• Considering H3O+ activity coefficient steeply raises for high acid concentrations, it is the opposite. – Poutnik Apr 18 at 7:27

In general, the conductivity of any liquid increases with the concentrations of its ions, and decreases with their dimensions. In pure sulfuric acid, the only ions existing are $$\ce{H3SO4+}$$ and $$\ce{HSO4-}$$. They are big and their concentration is low. So the conductivity of pure sulfuric acid is low. But when you add some water, the $$\ce{H2O}$$ molecules are totally transformed into $$\ce{H3O+}$$ and $$\ce{HSO4-}$$ ions which are numerous and sometimes small (for $$\ce{H3O+}$$). The conductivity must increase.