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Sulphur Dioxide is a a by-product of (mainly) powerstations that burn fossil fuels to produce the steam ofr the turbines. Sulphur Dioxide combines with water in the atmosphere to produce Sulphuric acid - which falls as 'acid rain.

The chemical process is...

SO2 + OH → HOSO2 - which is followed by...

HOSO2 + O2 → HO2 + SO3

In the presence of water, sulphur trioxide (SO3) is converted rapidly to sulphuric acid... SO3 + H2O → H2SO4

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11y ago

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