Home / Unit-9 Chemical Equilibrium / Question
MCQ
In the Contact process, the oxidation of SO2 to SO3 is exothermic. To get a good yield, the reaction:
Unit-9 Chemical Equilibrium
A is favoured by a very high temperature
B is favoured by a low temperature but is then slow
C is not affected by temperature
D must be done without a catalyst
Explanation

Since the forward reaction is exothermic, a low temperature favours SO3, but a moderate temperature is used as a compromise for a reasonable rate.

Related MCQs

For the exothermic reaction N2(g) + 3H2(g) ⇌ 2NH3(g), a decrease in temperature will:
Unit-9 Chemical Equilibrium View
In the reaction CaCO3(s) ⇌ CaO(s) + CO2(g), which substance is excluded from the equilibrium constant expression?
Unit-9 Chemical Equilibrium View
In the reaction CaCO3(s) ⇌ CaO(s) + CO2(g), Kc is equal to:
Unit-9 Chemical Equilibrium View
The equilibrium constant for a reaction whose equation is reversed becomes:
Unit-9 Chemical Equilibrium View
Adding heat to an endothermic reaction at equilibrium will:
Unit-9 Chemical Equilibrium View
Which of the following is an example of a reversible reaction?
Unit-9 Chemical Equilibrium View