Which of the following (a) dissolve in water, (b) are acids, (c) react with ethyl alcohol to give esters,?

Question

1.C2H5COOH
2.C3H8
3.C2H4
4.C2H5OH
5.HCl
6.C3H5(OH)3

Answer 1

The first person gave correct answers for a and b, but is wrong for c. The only compound that can react with ethanol to produce an ester is acetic acid (1).

Answer 2

(a); 1 (propanoic acid), 4 (ethanol) and 6 (glycerin). All form hydrogen bonfds with the H2O molecules, so they easily dissolve in water. Also HCl (hydrochloric acid) which is a polar molecule.

(b): 1 and 5.

(c) Only 1 (propanoic acid):

C2H5COOH + C2H5OH <==> C2H5COOC2H5 + H2O

Answer 3

a naive way to figure out if a compound is water soluble is to look for hydrogen bonds with water. A molecule is capable of H-bonding if H is attached to either N, O, or F (first approximation, and in this case llet's say also Cl). hence 1 (O-H), 4 (O-H), 5 (H-Cl), and 6.

acids (bronsted sense) are releasing "H+" : 1 (CO2H-->CO2- + H+), 5 (HCl-->H+ + Cl-)

alcohol + acid--> ester + H2O : 1, "6" (is a little special being an hydrate of a carboxylic acid)

Answer 4

A) #'s 1,4,5,6
B) #'s 1,5
C) #'s 1,4,6