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- Multiple ChoicePlease save your changes before editing any questions.
In the contact process, what are the raw materials needed for the production of sulfuric acid?
Water, air, sulfur
Ammonia, water, oxygen
Crude oil, air
- Multiple ChoicePlease save your changes before editing any questions.
Which one of the three stages of the contact process is reversible?
The burning of sulfur in oxygen to form sulfur dioxide
The reaction of sulfur dioxide with oxygen to form sulfur trioxide
The reaction of sulfur trioxide with water to form sulfuric acid
- Multiple ChoicePlease save your changes before editing any questions.
What is the name of the catalyst used in the contact process?
Iron
Nickel
Vanadium(V) oxide
- Multiple ChoicePlease save your changes before editing any questions.
The sulfur trioxide needs to be absorbed in concentrated sulfuric acid, rather than added direct into water. Why?
The addition to water will slow down the reaction
The addition to water will be highly exothermic
The addition to water will speed up the reaction
- Multiple ChoicePlease save your changes before editing any questions.
As the temperature increases, the percentage yield decreases at a decreasing rate
As the temperature increases, the percentage yield increases at an increasing rate
As the temperature increases, the percentage yield decreases at an increasing rate
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is the correct symbol equation for the production of sulfur trioxide in the second stage of the contact process?
2SO2(g) + O2(g) ⇌ 2SO3(g)
2SO2(g) + O2(g) → 2SO3(g)
2S(s) + 3O2(g) → 2SO3(g)
- Multiple ChoicePlease save your changes before editing any questions.
Sulfuric acid acts as a dehydrating agent. What does this mean?
It removes oxygen from a substance
It removes water from a substance
It removes carbon dioxide from a substance
- Multiple ChoicePlease save your changes before editing any questions.
When concentrated sulfuric acid is added to glucose, a black solid is formed over time. What is the name of the black solid?
Copper(II) oxide
Coal
Carbon
- Multiple ChoicePlease save your changes before editing any questions.
What would we observe when concentrated sulfuric acid is added to hydrated copper(II) sulfate crystals?
The blue crystals crumble and become white, steam is released
The blue crystals crumble and become white
The crystals will remain blue in colour
- Multiple ChoicePlease save your changes before editing any questions.
What is the exact temperature used for contact process
4300C
4500C
5000C
3000C