calcium oxide (lime?

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calcium oxide (lime?

One use of calcium oxide (lime) is in pollution control at coal-burning power plants. Which reaction below occurs in the smokestack of a power plant?

a.CaO(s) + SO3(g) → Ca(s) + SO2(g) + O2(g)
b.CaO(s) + SO3(g) → CaS(s) + 2 O2(g)
c.2 CaO(s) + C(s) → Ca2C(s) + O2(g)
d.CaO(s) + SO3(g) → CaSO4(s)
e.CaO(s) + C(s) → Ca(s) + CO(g)

2007-05-30 07:45:06 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

d.

Quick lime is used for desulfurization. It removes sulfur dioxide from the stack gases.

The byproduct is called synthetic gypsum since it has the same chemical composition as gypsum

2007-05-30 08:19:16 · answer #1 · answered by Poor one 6 · 0⤊ 0⤋

d. CaO(s) + SO3 ===> CaSO4(s)

2007-05-30 07:50:06 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋