WAEC - Chemistry (2000 - No. 22)
What is the effect of using vanadium (V) oxide as catalyst in the reaction represented by the following equation? 2SO2 + O2 ⇌ 2SO3; ∆H = - xKJmol-1
Decreases the value of ∆H
Increases the collision rate of reactant particles
Shifts equilibrium position to the right
Reduces the time for attainment of equilibrium
Explication
In the contact process above; a temperature of about 500ºC and use of Vanadium(V)Oxide catalyst increase the reaction rate and enable equilibrium to be reached in a shorter time.