Which is more acidic between methanal ($\ce{HCHO}$) and ethanal ($\ce{CH3CHO}$). Please explain using General organic chemistry basic concepts. My Effort: I saw the stability of the conjugate base. It would be $\ce{HCO-}$ and $\ce{CH2^{(-)}CHO}$. Due to resonance I can say that second one is more stabilized and thus a better acid.

2016年4月9日 · Determine the oxidation number of carbon in (A) ethanol and (B) ethanal. Answers are (A) -2 and (B) -1. I reviewed similar question at SE: Oxidation of Carbons and I found first answer to be clear and links given in this answer to be useful. I also found a good Khan Academy video, which basically confirms all in this answer

2016年5月25日 · Once you have got your acrolein from the aldol condensation of ethanal and formaldehyde you can react it with $\ce{NaCN, HCN}$ under kinetic control to get direct addition of the cyanide to the enone, forming a cyanohydrin [1]. The nitrile can then be hydrolysed in aqueous acid to yield the carboxylic acid.

2021年5月11日 · Consider for example ethanol being heated in the presence of copper at 300 °C. How does it give ethanal as a product? Copper being in its elemental state (oxidation state 0). Since negative oxidation state is not possible for Cu, which means that it should reduce ethanol to ethane. Certainly, high temperature should have some role here.

2019年1月2日 · $\begingroup$ The anion of ethanal may form, and may react with acetone but it can just as easily break down reforming the starting materials if that is not the most energetically favourable pathway. Don't get hung up on which anion forms fastest, it is not the factor that determines the outcome. $\endgroup$

2016年11月4日 · Why aren't the aldehydes methanal/formaldehyde and ethanal/acetaldehyde also ketones? Ketones are defined by replacing any H - C - H in an alkane with C=O, which is true for both of these: methanal replaces two hydrogen atoms in methane with C=O, while ethanal does it with ethane.

2017年7月9日 · In ethanol, there isn't the same possibility for reduction as the molecule is already in its lowest oxidation state. Even ethanal (an oxidation level up) isn't particularly oxidising (despite being able to accept electrons and become formally reduced).

2019年6月21日 · But answer in my book suggest ethanal is less reactive. Para -methoxybenzaldehyde vs para -methylbenzaldehyde. in this case due to the prescence of $\ce{OCH3}$ $\ce{O}$ will act as an electron withdrawing group as well as electron donating (resonace) whereas $\ce{CH3}$ group will only donate it's electron (resonance) thus para ...

According to my teacher, Na in ethanol reduces carbonyl compounds (e.g. aldehydes and ketones) to alcohols. However, I can't see where the hydrogen needed for reduction comes from. How does the red...

2020年12月4日 · For example, ethanol (hydrogen bond) has a boiling point of 78 ºC and ethanal 20 ºC (Van der Waals forces) but their dipole moments are respectively 1,69 D and 2,69 D. I thought the intensity of the hydrogen bond was due to the high polarization of the bond between a small and very electronegative atom like N, O, F, but this is not the case ...