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

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Side note

As far as carton is concerned, PAP 21 (carton), PAP 22 (paper), PAP 20 (corrugated cardboard) and C/PAP 81 (carton + plastic) and C/PAP 84 (aseptic - carton, plastic, aluminium) can all be sorted as carton packaging.

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