In this reaction, the two aldehydes serve different purposes; one aldehyde donates a proton and one aldehyde accepts a proton . 4-Dimethylaminobenzaldehyde is an efficient proton donor while benzaldehyde is both a proton acceptor and donor.
12.
An acid, a hydrogen ion ( H +, that is, a proton ) donor, can be neutralized by a base, a proton acceptor such as a hydroxide ion ( OH " ) to form water.
13.
In "'acid catalysis "'and "'base catalysis "'a chemical reaction is proton donor and the base is the proton acceptor, known as Bronsted-Lowry acid and base respectively.
14.
Of course aluminium hydroxide ( very insoluble ) and magnesium hydroxide ( pretty insoluble ) are both bases, as is sodium hydrogencarbonate ( if we really want to get technical, of course, the hydrogencarbonate ion is amphoteric ), because they are all proton acceptors.
15.
A modification of the Koenigs-Knorr reaction for building glycosides from 2, 3, 4, 6-tetra-O-acetyl-?-D-glucopyranosyl bromide ( acetobromoglucose ) originates from S . Hanessian who used the silver salt silver trifluoromethanesulfonate ( TfOAg ) and as a proton acceptor tetramethylurea.
16.
My question is, where is the primary proton acceptor in relation to the PS ? http : / / en . wikipedia . org / wiki / Image : Thylakoid _ membrane . png according to this diagram, is the primary acceptor INSIDE / PART OF the PS ? talk ) 22 : 06, 10 June 2008 ( UTC)
17.
I do imagine that eventually among the strong acids the limiting factor becomes not the H + concentration but the conjugate base which will " take away " the proton on substances that do not like to be protonated, even if the H + concentration is very high-- because then the conjugate base concentration is very high too, and the conjugate base becomes a better proton acceptor than whatever is being protonated.
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