Understanding the Contact Process

What is the main reason sulfurous acid is not desired in the contact process?

• It is highly reactive.

• It is expensive to produce.

• It is a weak acid and not very useful.

• It is a strong acid.

What is the desired product when sulfur trioxide is dissolved in water?

• Oleum

• Sulfur dioxide

• Sulfuric acid

• Sulfurous acid

Why is sulfur trioxide not directly dissolved in water during the contact process?

• The reaction is extremely exothermic.

• It forms a solid precipitate.

• The reaction is endothermic.

• Sulfur trioxide is insoluble in water.

What is the product formed when sulfur trioxide is dissolved in concentrated sulfuric acid?

• Sulfurous acid

• Oleum

• Sulfur dioxide

• Sulfuric acid

Why is concentrated sulfuric acid used instead of dilute acid in the contact process?

• To increase the reaction rate

• To prevent the reaction from being too exothermic

• To reduce the cost of production

• To increase the solubility of sulfur trioxide

What is the final product obtained after diluting oleum with water?

• Sulfur dioxide

• Sulfurous acid

• Sulfur trioxide

• Sulfuric acid

What is the main advantage of producing oleum in the contact process?

• It is less corrosive.

• It is cheaper to produce.

• It produces less heat.

• It is more stable.

What is the significance of the exothermic nature of the reactions in the contact process?

• It helps in cooling the system.

• It requires additional energy input.

• It makes the process slower.

• It can cause the sulfuric acid to boil.

Why is it important to specify 'concentrated' when referring to sulfuric acid in the contact process?

• To speed up the reaction

• To ensure accuracy in chemical reactions

• To reduce the cost of materials

• To increase the solubility of reactants

What is the role of vanadium(V) oxide in the contact process?

• It is a reactant.

• It is a byproduct.

• It is a catalyst.

• It acts as a solvent.