Write a balance chemical reaction for this and explain why this words using the solubility tables

Question

Vinegar (C2H4O2) is added to kettle to remove lime (CaCo3) bulid up 

Answer 1

2C₂H₄O_2(aq) + CaCO_3(s) ==> Ca(C2H3O2)₂(aq) + CO₂(g) + H₂O(l)

The acetic acid is a weak acid and it reacts with the insoluble calcium carbonate to form the soluble calcium acetate and carbonic acid. The carbonic acid is unstable and decomposes into carbon dioxide and water.