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 · 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 carboxylic acids.
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.
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 ...
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?
Picric Acid from Salicylic Acid - Chemistry Stack Exchange
2018年4月9日 · Picric Acid from Salicylic Acid. Ask Question Asked 6 years, 6 months ago. Modified 6 years, 6 months ago. ...
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.
Which is stronger ? Picric acid or phoshoric acid
2018年10月21日 · Picric acid is the stronger, pKa 0.38 data here. The first pKa for phosphoric acid is 2.15 data here. Remember that phosphoric acid is a tribasic acid so there are 3 dissociation constants, one for each acidic proton.
Acidity order of nitrophenols - Chemistry Stack Exchange
2016年6月21日 · As in other posts I have seen and learnt that, if one is given four compounds, namely para-nitrophenol, ortho-nitrophenol, meta-nitrophenol and phenol and is told to arrange them in order of acidity,