Give the equation for
Heat on sulphur with conc. sulphuric acid.
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Answer:
Hot sulfur trioxide passes through the heat exchanger and is dissolved in concentrated H2SO4 in the absorption tower to form oleum :
H2SO4(l)+SO3(g)⇒H2S2O7(l)H2SO4(l)+SO3(g)⇒H2S2O7(l)
Oleum is reacted with water to form concentrated H2SO4H2SO4.
H2S2O7(l)+H2O(l)⇒2H2SO4(l)
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