* Reaction: Glacial acetic acid (CH₃COOH) is a weak acid. Sodium hydroxide (NaOH) is a strong base. When these two react, they undergo a neutralization reaction to form sodium acetate (CH₃COONa) and water (H₂O):

CH₃COOH + NaOH → CH₃COONa + H₂O

* Solubility: Sodium acetate is a salt that is very soluble in water. Since the reaction produces water, the resulting solution will be a mixture of sodium acetate dissolved in water.

In short: Glacial acetic acid reacts with sodium hydroxide, producing soluble products, making the mixture soluble.