Final answer:
CoSO4 is cobalt(II) sulfate, and it qualifies as a strong electrolyte because it dissociates into ions in water. However, it is neither an acid nor a base, so the correct classification for CoSO4 is 'none of these'.
Step-by-step explanation:
The compound in question, CoSO4, is cobalt(II) sulfate. When considering whether a substance is an acid or a base, one should refer to its reaction in aqueous solution. Cobalt(II) sulfate does not produce hydrogen ions (H+) in water, which would categorize it as an acid, nor does it produce hydroxide ions (OH-) to categorize it as a base.
Instead, CoSO4 is a saline compound that dissociates into Co2+ and SO42- ions in solution. Since it does dissociate completely in water to form ions, it qualifies as a strong electrolyte. However, it does not itself display acidic or basic properties, so it is not an acid or a base. Thus, the best classification for CoSO4 is none of these when deciding if it is a strong acid, a weak acid, a strong base, or a weak base.