Preparation of picric acid - Chemistry Stack Exchange
The picric acid is an oil, that soon gets solid after one minute or two. Throw the liquid away. Half fill the tube with $\pu{10 mL}$ water. Heat to $\pu{100°C}$: the picric acid gets dissolved. Wait : nice yellow needles are produced in the tube by slow cooling. It is picric acid, which can be filtered in case of necessity. But don't do it ...
Why is picric acid more acidic than carbonic acid?
2015年5月4日 · The acidic group in carbonic acid is the carboxyl group, R-COOH (for carbonic acid, R = OH). You've probably been told that hydroxyl groups (C-OH, present in alcohols and phenols) are weaker acids than carboxyl groups/carboxylic acids, yet picric acid is a substituted phenol and is quite a bit more acidic than carbonic acid and simple ...
organic chemistry - Why is picric acid more explosive than TNT ...
2015年5月15日 · The structure and molar mass are very similar to TNT, but replacing the methyl group with a hydroxyl means the oxygen content of picric acid is higher. While still overall oxygen-poor, the detonation proceeds with much less soot and hydrogen generation, meaning a more complete burn, a higher energy release, and consequently a greater explosive ...
Is picric acid a very strong acid? - Chemistry Stack Exchange
2016年10月20日 · Picric acid has nitro groups in para and ortho positions, so it has great possibility to go for resonance, thus it is supposed to be a very good acid. But a question arises! But a question arises! The $\ce{O}$ of $\ce{-OH}$ has intramolecular $\ce{H}$-bonding with ortho -nitro groups present on both sides.
How to weight picric acid? - Chemistry Stack Exchange
2019年9月29日 · $\begingroup$ Only about 1–2% of picric acid would be actually dissolved in water at room temperature, so without consulting any literature sources I guess it would be enough to just distribute the dispersed substance on a …
organic chemistry - Why can't picric acid be made more acidic by …
2023年12月3日 · I understand that picric acid is acidic because of the $\ce{-NO2}$ electron withdrawing group, but why can't we add more of those on the meta positions to make it more acidic? Is it because that $\ce{-NO2}$ shows less -R effect when it is on that meta positions?
Why is picric acid not more steam volatile than p-nitrophenol, if ...
2024年2月25日 · Also, assuming that it is true that steam volatility is a result of intramolecular H bonding, then picric acid would be more steam volatile than p-nitrophenol, which is not true (as it has a higher boiling point). Doesn't this result directly contradict the assumption?
Picric Acid from Salicylic Acid - Chemistry Stack Exchange
2018年4月9日 · In ordinary electrophilic substitution of unsubstituted benzene, the leaving group is HX+ H X +. This is basically the substituent (in this case −H − H) having lost an electron. If suppose, the electrophile were to attack the carbon substituted with a carboxylate functional group (−COO− − C O O −), the leaving group would be COX2 C ...
Acidity order of nitrophenols - Chemistry Stack Exchange
2016年6月21日 · 17. You have correctly identified that m -nitrophenol should be the weakest acid among the isomers as the resulting anion cannot be stabilised by the -M -M effect of nitro group owing to its meta location. The acidity order of the remaining two nitrophenols can be explained in this way: Hydrogen bonding is possible in both of them.
Does nitration of phenol with nitric acid yields 2,6-dinitrophenol?
2023年5月15日 · Note that although picric acid is the targeted product, you will get all sorts of dinitro- and mononitro- isomers as well. To get pure picric acid, steps are taken to distill of the DNPs and MNPs or make the reaction more selective. So, 2,6-dinitrophenol is also a product of the reaction. It's just that it's too minor of a product to mention.