Question

Why do HCl, H2SO4, HNO3, etc., show acid character in aqueous solutions while solutions of compounds like C6H12O6 (glucose) and C2H5OH (alcohol) do not show acidic character?

Answer 1

The Solution of Glucose (C6H12O6) and alcohol(C2H5OH) don't form ions in water

HCl,HNO3 dissociates to form Hydrogen ions that's the reason why they are acidic.

Explanation:

HCl, H2SO4 and HNO3  show acidic behaviour in aqueous solution as they dissociates in water to produce Hydrogen ions.

The dissociation of HCl and HNO3 to form Hydrogen ions always occurs in the presence of water. Hydrogen ions($H^{+}$) combine with H20 to form Hydronium ions($H_{3}O^{+}$).

The reaction as follows:

$HCl + water$→$H^{+} Cl^{-}$

$H^{+}+H_{2}O$→$H_{3} O^{+}$

While Solution of Glucose (C6H12O6) and alcohol(C2H5OH) don't form ions in water.h

Although aqueous solution of glucose and alcohol contain hydrogen, these cannot dissociates in water to form Hydrogen ions. Hence they don't show acidic character.

Answer 2

Alcohol & glucose Cannot Dissociate to give Hydrogen Ions.

Explanation:

HCl and $HNO_3$ get dissociated in the presence of water to form the respective ions of Hydrogen ($H^+$).

Hydronium ions ($H_3O^+$) are formed due to the combination of $H_2O$ hydrogen ions ($H^+$).

• The reaction can be given as follows:

$HCl --> H^+ + Cl^-$

$H^+ + H_2O --> H_3O^+$

• Due to this property HCl and $HNO_3$ show acidic character in aqueous solution.

whereas,

• It is not possible for Alcohol and glucose to get dissociated to give hydrogen ions.

So, Acidic Nature is not shown by them.