Question

Which of the following substances could the unknown be: KOH, NH3, HNO3, KClO2, H3PO3, CH3COCH3 (acetone)?

Answer 1

KOH and NH3 are Arrhenius bases as they produce hydroxide ions in water, HNO3 and H3PO3 are Arrhenius acids due to their release of hydrogen ions, and KClO2 and CH3COCH3 are neither as they don't release hydroxide or hydrogen ions in solution.

Step-by-step explanation:

To identify whether each compound is an Arrhenius acid, an Arrhenius base, or neither, we rely on the definitions of Arrhenius acids and bases. An Arrhenius acid is a substance that produces H+ ions in aqueous solution, and an Arrhenius base produces OH- ions.

KOH (Potassium hydroxide) is an Arrhenius base as it dissociates in water to give K+ and OH- ions.

NH3 (Ammonia) is an Arrhenius base as it reacts with water to produce NH4+ and OH- ions.

HNO3 (Nitric acid) is an Arrhenius acid because it dissociates in water to give H+ and NO3- ions.

KClO2 (Potassium chlorite) is neither an Arrhenius acid nor an Arrhenius base as it does not produce H+ or OH- directly in solution.

H3PO3 (Phosphorous acid) is an Arrhenius acid since it releases H+ ions in aqueous solution.

CH3COCH3 (Acetone) is neither an Arrhenius acid nor an Arrhenius base as it does not produce H+ or OH- ions in a water-based solution.

In summary, KOH and NH3 are Arrhenius bases, HNO3 and H3PO3 are Arrhenius acids, while KClO2 and CH3COCH3 are neither.

Answer 2

CH3COCH3

Step-by-step explanation:

Acetone is an organic compound belonging to the organic ketone function.

To recognize which function a compound belongs to, we must analyze its functional group. For example, hydroxyl (OH) is characteristic of alcohols. For ketones, the functional group is carbonyl, which is represented below.

Analyzing the options, we can notice that NH3, HNO3, KClO2 and H3PO3 are inorganic compunds, because they don't have carbon in their structures. KOH has the hydroxyl, so it's a alchol, and CH3COCH3 may be writing as a ketone.