aviridiane

ok thanks for the help

 

R-CONH2 + HNO2 == (HEAT) == >R-COOH + N2(evolved)+H2O

 

Looking at the final products from the equation, I think the reaction mechanism may be somewhat similar to the reactions of primary amines with nitrous acid

So if that's the case, then the mechanism would be something like this:

Reagent: sodium nitrite, NaNO2 + HCl (aq)

Since the diazonium salts is not stable, it decomposes readily to form nitrogen gas and a carbocation.

The carbocation then reacts with water to give the carboxylic acid.

Overall equation:

I am not really certain, so do correct me if i am wrong.

There's a question i did which got me thinking (I have tried searching a reason for it but to no avail) so is it possible for CH3CH2CN(l) + NaOH(aq) to produce ammonia gas when heated?

As far as I know, it's amide which produces ammonia gas when it is refluxed with NaOH(aq).

So does that mean somehow or other, CH3CH2CN(l) is turned into amide?

If so, how? and... if not? how is it possible that the nitrile compound releases NH3(g)?

If it's possible, please insert the chemical equations/mechanisms too. Thanks

check out my blog: http://www.**************

hmm the link doesn't seem to be working....

Thanks btw

I have a biology reference book stating that

"polygenic inheritance is applied when multiple independent of genes have similar and additive effects on the same character. Alleles at several, perhaps many, loci affect each character."

What i was wondering is whether these loci controlling a single character are situated at the same chromosome or are they scattered at different chromosomes?

Thanks

Neither are actually represents a 'dead end'; they've found a niche that they work well in, and stick with it, like sharks.

 

A 'dead end' would be like a fruit tree whose name I forget in Australia. It has huge fruit, which used to be eaten by megafauna like giant wombats. But now, such species are extinct, and the fruit has no transport, so it just rots.

 

Mokele

but it isn't extinct or is it? So can a living organism be classified as having a 'dead-end' evolution if it's alive?

Or could it mean that the species have evolved to the point at which further evolution is unnecessary as JHAQ wrote, as they are well adapted to the environment.

Is there a clear definition on what's 'dead-end' evolution btw?

I have a sentence here which is rather vague. I do hope someone can shed some light on what's dead-end evolution. I did try browsing through the sites but no luck.

Sentence:

Porifera shows 'dead-end' evolution. This means that it represents the end of an evolutionary line.

And what does it mean by representing the end of an evolutionary line?

Any help is deeply appreciated.

hi everyone, bumped into this site when searching for the colour of tetrachloromethane when it's added to water... still no luck ><, but I look forward to browsing through the threads

P.S: what's a Lepton btw?