Why sulphur dioxide is not dissolved directly into water to form sulphuric acid during contact process but first converted into oleum?
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This reaction is highly exothermic. Enough heat is generated to vaporize the aqueous solution of Sulfuric acid that would be formed. In order to control this on an industrial scale, a great amount of energy would be need to remove this generated heat. This would be costly, driving up the final price of the H2SO4 produced.
In addition, the vaporized H2SO4 is very difficult to deal with. This is super acid rain and even if contained is highly corrosive.
By dissolving the Sulphur trioxide in Sulphuric acid, oleum is formed:
SO3 (g) + H2SO4 (l) → H2S2O7 (l)
This reaction does generate as much heat, an in a plant which is making H2SO4, the cost of the acid is negligible.
In addition, the vaporized H2SO4 is very difficult to deal with. This is super acid rain and even if contained is highly corrosive.
By dissolving the Sulphur trioxide in Sulphuric acid, oleum is formed:
SO3 (g) + H2SO4 (l) → H2S2O7 (l)
This reaction does generate as much heat, an in a plant which is making H2SO4, the cost of the acid is negligible.
Rashi937:
Thanx for the speedy ans
Yes, this is a quick answer because I have already read it.
make it brainlest ans if u like it?
;)
Wc
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