2007-08-11 18:25:16 · 4 answers · asked by organic chem 1 in Science & Mathematics ➔ Chemistry
A compound may be acidic in two ways. Firstly u may call it acidic if it turns blue litmus red or gives effervescence with NaHCO3. Carboxylic acids and o-p nitro phenol derivatives may come under this category.
Note that phenols amines thiols do not come under this category.
Other interpretation of acidity is that the compound contains atleast one acidic hydrogen i.e. the anion formed by removal of proton from compound is stable. Here we can have stable enols(like phenol). We could have active methylene groups which on delocalisation give O- or N-.
A point to be noted is that acidity is a relative property and depends on the reagent used. eg. Amines are basic as they turn red litmus blue and are soluble in HCl but in the presence of grignards reagent (RMgX) a stronger base we get RH and -NHMgX.
2007-08-13 09:06:01 · answer #1 · answered by sarjan_sarge 3 · 0⤊ 0⤋
The compounds having R-COOH group i.e. carboxylic group are most acidic. Also R-COO-R ketone group are also acidic. I guess if amine , nitro & aldehyde group are also acidic.
2007-08-11 22:15:31 · answer #2 · answered by cuty cutz 1 · 0⤊ 0⤋
A simple answer is anything with an -OH group.
Carboxylic acids are the strongest, followed by alcohols.
Amines are basic.
2007-08-11 19:12:43 · answer #3 · answered by Gervald F 7 · 0⤊ 0⤋
well carboxylic acids are, that is a no brainer,
alcohols are
i think amines, and maybe thiols, oh and phenols
2007-08-11 18:34:50 · answer #4 · answered by Bio-student Again(aka nursegirl) 4 · 0⤊ 1⤋