Question

Why sugar give Carbon with H2So4?​

Answer 1

Explanation:

Sugar + H2SO4

I know this is a very common demonstration experiment so apologies for asking about it but I have been looking at a different version. C12H22O11 + H2SO4 -> 12C + 12H20 The H2SO4 is acting as a catalyst and dehydrates the sugar to leave elemental carbon + H2O. How does the H2SO4 do this. in this paper doi:10.1016/j.surfcoat.2004.10.039 they use a sugar water ethanol solution with a dash of h2so4 to form a thin carbon film. Would the h2so4 not be dissociated of does this matter. The solution is left to evaporate, is this to drive off the water and ethanol so that only the h2so4 remains or is the sugar being dehydrated in the solution? Any help appreciated.

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