fill in the blank question\nin an acid molecule, an ionizable hydrogen atom is connected to the molecule by…

Answer:

1. polar; 2. non - polar

Explanation:

Step1: Ionizable hydrogen in acid

In an acid, the ionizable hydrogen is attached to an electronegative atom (like oxygen in many acids) by a polar covalent bond. The difference in electronegativity causes the bond to be polar, making the hydrogen atom more likely to be released as a proton ($H^+$).

Step2: Non - ionizable hydrogen

Hydrogen atoms that are not ionizable are usually connected to other non - electronegative atoms (such as carbon in organic acids) by non - polar covalent bonds. The similar electronegativities of the bonded atoms result in an equal sharing of electrons and the hydrogen is not easily released.