Question

which of the following ions is formed when the positive hydrogen ions from an acid bond to water molecules? H- OH- H2O+ H3O+

Answer 1

Answer : The correct option is, $H_3O^+$

Explanation :

Acid : It is a substance that has ability of donating proton or hydrogen ion, $H^+$.

The general acid dissociation reaction will be,

$HX\rightarrow H^++X^-$

As per question, when the positive hydrogen ions bonded to the water molecule then it forms hydronium ion.

The balanced reaction will be,

$H^++H_2O\rightarrow H_3O^+$

Hence, the ion formed is, $H_3O^+$

Answer 2

Answer:

H₃O⁺.

Explanation:

• When H⁺ is bonded to water molecule, it forms hydronium ion:

H⁺ + H₂O → H₃O⁺.