How does concentrated sulfuric acid interact with organic matter? Why use caution when performing experiments

How does concentrated sulfuric acid interact with organic matter? Why use caution when performing experiments with concentrated sulfuric acid? Why can’t sodium hydroxide solution be added to concentrated sulfuric acid solution?

Concentrated sulfuric acid carbonizes organic matter, taking away water from them. Experiments with it must be carried out with caution. sulfuric acid causes severe burns. Do not add sodium hydroxide solution to concentrated tartaric acid. the solution contains a lot of water, which, in contact with acid, will spray out and can cause burns.

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