Which of the following compounds does not give H ' Ions In aqueous solutlonl
Answers
Answer:
hydrogen atom in an acid that forms a positive ion when the acid dissociates is called as acid hydrogen.
A) Phenol can lose a hydrogen ion and form phenoxide ion which is more stable than phenol due to the delocalization of the negative charge. Thus phenol prefers to lose hydrogen as cation to form phenoxide ion and hence phenols are acidic in nature.
B) The electron density around the nitrogen atom in methylamine is greater than the electron density around the nitrogen atom in phenylamine, so the lone pair of electrons on the nitrogen atom are more easily donated to a proton by methylamine than phenylamine. Methylamine is a stronger base
C) Acetic acid is a weak monoprotic acid. Because in an aqueous solution it can donate its proton. Chemically you can say that if a compound gives proton or H
+
ion on dissociation it is an acid hence; Acetic acid CH
3
COOH is acid
D) Methanol is more acidic than water because its conjugate base (methoxide) is weaker than water's conjugate base (hydroxide). The methyl group slightly takes away electron density from the oxygen atom, unlike the hydrogen in water, which actually contributes more electron distribution.
The presence of H⁺ ions is responsible for acidity
Compounds like alcohol and glucose do not give H⁺ ions in water.
Explanation:
An acid is that which gives off hydrogen ions in water and forms salts.
It is measured on a scale known as the pH scale.
The presence of H⁺ in HCl (Hydrochloric acid),HNO₃(Nitric Acid), H₂SO₄(Sulphuric Acid), etc gives H⁺ ions in water.
Compounds like glucose and alcohol do not show acidic nature.