Question

К щелочам относятся вещества,объединенные в группу: 1)H2SO3,Ba(OH)2,NaOH 2)Ca(OH)2,Fe(OH)3,KOH 3)NaOH,KOH,LiOH 4)KOH,Al(OH)3,LiOH

Answer 1

Щелочные металлы - Li, K, Na.
значит, ответ 3.

Answer 2

Classification of Substances as Bases

The substances listed can be classified as bases. Bases are substances that can accept protons or donate pairs of electrons. Let's categorize the given substances into the appropriate groups.

1. H2SO3, Ba(OH)2, NaOH 2. Ca(OH)2, Fe(OH)3, KOH 3. NaOH, KOH, LiOH 4. KOH, Al(OH)3, LiOH

Based on the given options, the correct group of substances that are classified as bases is: Option 3: NaOH, KOH, LiOH.

This classification is based on the chemical properties of the substances and their ability to act as bases by accepting protons or donating pairs of electrons.

Would you like to know more about the properties and uses of these bases?