Relationship between ionic mobility of two species on the same solvent

[TroiKindo]

There is a electrolytic cell which has H₂SO₄ as solvent with two identical platinum plates.

Ionic mobility = drift velocity / electrical field strength (U=V/E)

If I only know the Electrical field strength,  Ionic mobility of the SO₄^2- and drift velocity of H⁺ ,

Is there any relationship between the ionic mobility of the SO₄^2- and drift velocity of H⁺ to calculate the ionic mobility of the H⁺?

Is there any relationship between the drift velocities of H⁺ and SO₄^2- or ionic mobilities of H⁺ and SO₄^2-

or can I write the equation as U_SO4^2- = V_H⁺/E