Chemical reaction which happens when adding vinegar to limestone

Using vinegar is a common method to remove limestone from equipment or tools that are usually submerged in tap water. The chemical reaction that happens when this happens is the following.

CaCO₃ (the limestone) + 2CH₃COOH (the vinegar) → Ca(CH₃COO)₂ (calcium acetate) + H₂O (water) + CO₂ (carbon dioxide)

What can and cannot be recycled

As far as plastic is concerned, every plastic type except for type 3 (PVC) and types 6 (PS) and 7 (Other), can be recycled safely. Which is good.
Types 3, 6, and 7 should not be recycled, ever.

Note: the above only applies to the Romanian recycling system

Source: https://micilebucurii.ro/schimbari-climatice/ghid-reciclarea-deseurilor-colectare-separata-coduri-reciclare/#htoc-reciclare-plastic