Is it necessary for every compound to be acidic or basic or neutral?

Answer 1

To measure the pH of a substance it has to be in solution so if the substance is insoluble you cannot measure its pH. A basic substance is not the same as an alkaline substances. A basic substance is one which can neutralise an acid. An alkaline substance is a solution of a base.

For example, chalk (calcium carbonate) is basic as it neutralises acids but as it is insoluble, it is not an alkali. However solid sodium hydroxide can be described as a base as it can neutralise an acid and as it is soluble in water, a solution of sodium hydroxide is both a base and an alkali.

Answer 2

No, not every compound needs to be acidic, basic, or neutral. Some compounds can be amphoteric, meaning they can act as both an acid and a base depending on the reaction conditions. Additionally, some compounds may not have significant acidic or basic properties.