How Does Lime Reduce Sulfur Dioxide Emissions from the Burning

question 99

Multiple Choice

How does lime reduce sulfur dioxide emissions from the burning of coal?

• A)It reacts with the sulfur dioxide to form calcium sulfite solid that can be precipitated.
• B)It reduces the sulfur dioxide to elemental sulfur that is harmless to the environment.
• C)It oxidizes the sulfur dioxide to tetrathionate that is highly water soluble so it can be scrubbed from the emission gases.
• D)It catalyzes the conversion of sulfur dioxide to sulfur trioxide which is much less volatile and can be removed by condensation.
• E)It converts SO₂ to solid, elemental sulfur.

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