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chenbeier

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Everything posted by chenbeier

  1. The question is what do you want to electrolyse? What is your aim? If you electrolyse salt NaCl then the Chloride will get a precipitate on the Lead as PbCl2, this decrease the yield down to Zero. Lead electrodes are only good in a car battery. You need inert electrodes. Copper bars coated with gold. Or platinum, Iridium or Ruthenium electrodes. It's a matter of money. Graphit is also a good choice, but will be consumed. Then the conductivity of your electrolyte has an impact. Concentration is a key factor. Surface of the electrodes! Influence of current density. Cathode small, Anode big. I
  2. The first step is to add OH- at the carbonylgroup. Then kick out the alcoholate RO- and get Carbonic acid. In second step acid neutralize the alcoholate to alcohol an get the salt of the acid Water is not involved. https://share.google/images/HqwOst5o4mCSy05ex
  3. chenbeier replied to Alvarop's topic in Organic Chemistry
    Translation When a triester reacts with three equivalents of sodium hydroxide (NaOH), each ester bond is broken by the action of the hydroxyl ion, which attacks the carbon of the carbonyl group. The result is three sodium carboxylate salts (which are soaps) and glycerol as the other product. In the process, the hydroxyl ion breaks the ester bonds, releasing the alkoxy group from glycerol, which is then protonated to form the final alcohol. After all the hydrolyses, the resulting products are glycerol and three sodium carboxylates (R–COO⁻ Na⁺). If the mixture is acidified at the end, these carboxylates are converted into free fatty acids. But do you have a question?
  4. Information here https://www.nobelprize.org/prizes/chemistry/2025/press-release/
  5. No, but aniline is preferred as already mentioned.
  6. No, C2H6 is called ethane, C2H5 is Ethyl, the naming is correct. Is possible, but Aniline is a trival name .
  7. Additionally oxygen is the group VI im the PSE. Means it is able to make 2 bonds to reach octet rule. Either 2 single bonds or one double bond.
  8. Oxygen is normally two bonded. In water it can bond to two hydrogen gives H2O. In organic compounds it can bond to one hydrogen and the other bond can go to carbon like in alcohols or phenols ROH. Also possible to bond to two carbons and form Ethers R-O-R'. It can also bond 2 times to carbon like in Aldehyde R-CHO or ketons R-CO-R' like your example 3- Pentanone. Both possibilities are given in carbon acid and their Esters. RCOOR' R =H, Alkyl or Aryl.
  9. I don't know why you telling this. It has nothing to do how many combinations we have if two kind of atoms will connect each other.
  10. The math is following Example hydrocarbons . They have infinite compounds. First group are alkane. CnH2n+2, n = €N0 With n =1 you get CH4 Methane And so one. There are more groups
  11. Great you found more exotic NxOy compounds.
  12. There are more N2O, NO, N2O3, NO2, N2O4 and N2O5 It's the matter of oxidation stage of nitrogen. It 1 from +1 to +5 possible.
  13. For this reason it would be nice to know the yield of this reaction. Also I would suggested to add high amount of Nitomethane, so that the amount of the 5-Formyl salicylic acid is low a possible after reaction
  14. You didn't got the mechanism The whole Nitromethan will be built in R-CHO + CH3NO2 => R-CH=CHNO2 + H2O Read about Aldol and the exchange to CH acide CH3NO2 instead of CH3CHO Ammonium acetate works as a buffer to keep pH stable.
  15. The mechanism is a Henryreaction. Its a Nitroaldolreaction https://en.m.wikipedia.org/wiki/Henry_reaction
  16. For this we need more information about procedure of the reaction, amount of reactants, mechanism, solubilities each components, yield, etc.
  17. Nitro methane is a reactant and will be consumed. Ethanol is the solvent. The product is 5-(2 Nitro-Vinyl) salicylic acid. Not Salicylic acid itself.
  18. Alizarin make a color by adding of aluminium ions.
  19. It is nothing special. Abietic acid a resin acid is in rosin and linseed is only the solvent. After drying you get the varnish.
  20. Aluminium of course will give a wrong result. Arsenic and lead has no impact on the result. The question is what kind of sample has Externet.

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