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- 1. Multiple Choice
Select all the raw materials for the Contact process.
Sulfur
Air
Hydrogen
Water
- 2. Multiple Choice
The Contact process is used for the manufacture of...
Sulfur
Sulfur dioxide
Sulfur trioxide
Sulfuric acid
- 3. Multiple Choice
Name the catalyst used in the Contact process.
Finely-divided Iron
Vanadium (V) Oxide
Nickel
Chromium
- 4. Multiple Choice
What are the conditions used in the Contact process?
and
and
and
and
- 5. Multiple Choice
What is H2S2O7?
Concentrated sulfuric acid
Sulfur trioxide
Oleum
Hydrogen sulfate
- 6. Multiple Choice
Why is sulfur trioxide not dissolved directly in water?
There would be no reaction
Sulfur trioxide is insoluble in water
Sulfur trioxide reacts violently with water to produce fog of H2SO4
Sulfur trioxide needs to be dry
- 7. Multiple Choice
What are the uses of sulfuric acid? Choose the correct answers.
In the manufacture of detergents and fertilisers
As a battery acid
As food preservative
As a bleach
- 8. Multiple Choice
In the Contact process, what happens to the equilibrium when the pressure is increased?
Shifts to the left
Shifts to the right
No change in equilibrium
- 9. Multiple Choice
The enthalpy change of a reaction in the Contact process reads as kJ/mol. What does this tell us about the reaction?
It is an exothermic reaction
It is an endothermic reaction
It loses 197 grams of reactant
It produces 197 grams of product
- 10. Multiple Choice
What is the pH of sulfuric acid?
pH 2
pH 7
pH 8
pH 13
- 11. Multiple Choice
Which of the following is NOT a raw material for the Contact process?
Sulfur
Air
Hydrogen
Water
- 12. Multiple Choice
What is the formula of sulfuric acid?
H2SO4
HSO4
- 13. Multiple Choice
Which is a use of sulfuric acid?
As food preservatives
As a car battery acid
- 14. Multiple Choice
What is the name of manufacturing process of sulfuric acid?
contact
frasch
haber
ostwald
- 15. Multiple ChoiceDescribe the appearance of elemental sulfura yellow gasa yellow powdera green liquida blue solid
- 16. Multiple ChoiceName SO2monosulfur dioxidesulfur dioxidesulfur oxide
sulfur (II) oxide
- 17. Multiple Choice
Sulfuric acid is a
weak acid
strong acid
- 18. Multiple Choice
2SO2 (g) + O2 (g) ⇌ 2SO3 (g)
The equation above refers to the 2nd stage of Contact Process.
What are the optimum conditions to favour the yield of sulfur trioxide?
Low Pressure
High Pressure
Low Temperature
High Temperature
Iron(II) oxide as catalyst
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