What is ionizable hydrogen and why we say it replaceable hydrogen

only hydrogen atoms that are part of a highly polar covalent bond are ionizable. The hydrogen atom is attracted to the lone pair of electrons in a water molecule when HCl is dissolved in water. The result is that the H−Cl bond breaks, with both bonding electrons remaining with the Cl, forming a chloride ion.

Explanation:

In an acid molecule, hydrogen atoms may be substituted by metal atoms.

Explanation:

It is ionizable only to hydrogen atoms that are part of a strongly polar covalent bond. As HCl is dissolved in water, the hydrogen atom is drawn to the lone pair of electrons in a water molecule. The effect is that the H-Cl bond splits, with the Cl remaining with both bonding electrons, forming a chloride ion.

the answer is c. nacl

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