Hydrogen selenide (HzSe) reacts with water according to the following equation.
H2Se + H20 -> SeH-+ H30+
In three to five sentences, identify the acid, base, conjugate acid, and conjugate base in this reaction. Use patterns in the periodic table to explain why the substances you identified acted as the acid and the base in this reaction.
In the given reaction, H2Se (hydrogen selenide) can be identified as the acid, while H2O (water) acts as the base. The conjugate acid is SeH- (selenide ion), and the conjugate base is H3O+ (hydronium ion).
H2Se acts as an acid because it donates a proton (H+) in the reaction. It does this because selenium (Se) is a nonmetal located in the oxygen group of the periodic table, and nonmetals tend to act as acids by donating protons.
On the other hand, H2O acts as a base because it accepts the proton (+H) from H2Se. Water is a polar compound containing an oxygen atom, which has a relatively high electronegativity compared to hydrogen. This makes water more likely to accept a proton and act as a base.
The conjugate acid, SeH-, is formed when H2Se loses a proton. It acts as a base as it can accept a proton in a reverse reaction. The conjugate base, H3O+, is formed when H2O accepts a proton from H2Se. It can act as an acid by donating a proton in a reverse reaction.
Overall, the acid-base behavior in this reaction is determined by the relative ability of the elements involved to donate or accept protons, which is influenced by their positions in the periodic table.
In this reaction, hydrogen selenide (H2Se) is acting as the acid, while water (H2O) is acting as the base. The conjugate acid is SeH- (selenide ion), and the conjugate base is H3O+ (hydronium ion).
H2Se acts as the acid because it donates a proton (H+) to water, resulting in the formation of the hydronium ion (H3O+). This is evident from the fact that H2Se loses a hydrogen ion (H+) in the reaction. On the other hand, water acts as the base as it accepts the proton donated by H2Se, resulting in the formation of the selenide ion (SeH-).
The classification of H2Se and H2O as an acid and a base respectively can be understood by looking at the trends in the periodic table. Hydrogen is located in Group 1, which means it tends to lose an electron to achieve a more stable noble gas configuration. Therefore, it is more likely to act as an acid by donating a proton. On the other hand, oxygen in water is more electronegative than selenium in H2Se, making it more likely to act as a base and accept a proton.