CH-1272

Acid rain

Chemistry · Secondary 4 · Medium · Acid rain

Sulfur dioxide from a factory is removed by reacting it with calcium carbonate slurry in a scrubber. Which balanced equation correctly represents this desulfurisation reaction?

$SO_2 + CaCO_3 \rightarrow CaSO_3 + CO_2$
$SO_2 + CaCO_3 \rightarrow CaSO_4 + CO$
$SO_2 + CaCO_3 \rightarrow CaO + CO_2$
$SO_2 + CaCO_3 \rightarrow CaCO_3 + SO_2$

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