Give condensed and bond line structural formulas and identify the functional group(s) present, if any, for :
(a) 2,2,4-Trimethylpentane
(b) 2-Hydroxy-1,2,3-propanetricarboxylic acid
(c) Hexanedial

Explanation

(a) 2, 2, 4–
trimethylpentane
Condensed formula:
`(CH_(3))_(2)CHCH_(2)C` `(CH_(3))_(3-)`
Bond line formula:

(b) 2–hydroxy–1, 2, 3–propanetricarboxylic acid
Condensed Formula:
`(COOH)CH_(2)C(OH) (COOH)CH_(2)(COOH)`
Bond line formula:
The functional groups present in the given compound are carboxylic acid (–COOH) and alcoholic (–OH) groups.
(c ) Hexaned
ial Condensed
Formula: (CHO)
`(CH_(2))_(4) (CHO)`
Bond line
Formula:

The functional group present in the given compound is aldehyde (–CHO).