Final answer:
Cu(NO3)2 is a salt and not classified as an acid or base, but dissolves in water as ions. Acids and bases can be classified as strong or weak based on their dissociation in water, with strong acids/bases completely dissociating and weak acids/bases not completely dissociating.
Step-by-step explanation:
The compound Cu(NO3)2 given in the question is neither a strong acid, a weak acid, a strong base, nor a non-electrolyte. Instead, this compound is a salt that results from the reaction of a strong acid (nitric acid, HNO3) with a metal, copper (Cu). When this salt dissolves in water it dissociates into its ions: Cu2+ and NO3-. The nitrate ion comes from a strong acid but is neither acidic nor basic in water, meaning that overall, the compound is a none of these options provided.
As for the way to classify different acids and bases, this is how you should do it: a strong acid like HCl, dissociates completely in water. A weak acid like CH3CH2CO2H does not completely dissociate in water. A strong base, such as NaOH, dissociates completely in water, making it a strong electrolyte. In contrast, compounds such as C5H5N do not contain an OH group and do not dissociate completely, making them weak bases.