Which of the following substances can act as a Bronsted base in aqueous solution? (Select all that apply.)

Question

Which of the following substances can act as a Bronsted base in aqueous solution? (Select all that apply.)

H2O
NH3
H2
CH3NH2
O2
PH41+
CO32-

Answer 1

To determine which substances can act as a Bronsted base in aqueous solution, we need to consider their ability to accept a proton (H+ ion).

The substances that can act as Bronsted bases are those that have a lone pair of electrons available for proton (H+) acceptance.

Based on this information, the substances that can act as Bronsted bases in aqueous solution are:
- NH3 (Ammonia)
- CH3NH2 (Methylamine)
- CO32- (Carbonate ion)

These substances have a lone pair of electrons and can accept a proton (H+) to form NH4+, CH3NH3+, and HCO3- ions, respectively.

Answer 2

To determine which substances can act as a Bronsted base in aqueous solution, we need to understand the characteristics of a Bronsted base. A Bronsted base is a substance that accepts a proton (H+) from another substance, typically an acid.

Let's go through the given substances one by one:

1. H2O (Water): Water can act as a Bronsted base as it can accept a proton (H+) and form the hydronium ion (H3O+). Therefore, H2O can act as a Bronsted base.

2. NH3 (Ammonia): Ammonia is a typical example of a Bronsted base. It can accept a proton (H+) and form the ammonium ion (NH4+). Therefore, NH3 can act as a Bronsted base.

3. H2 (Hydrogen Gas): Hydrogen gas is not a Bronsted base because it does not have any available lone pairs of electrons to accept a proton.

4. CH3NH2 (Methylamine): Methylamine is a weak base, and it can act as a Bronsted base by accepting a proton from an acid. Therefore, CH3NH2 can act as a Bronsted base.

5. O2 (Oxygen Gas): Oxygen gas is not a Bronsted base as it does not have any lone pairs of electrons available to accept a proton.

6. PH4+ (Tetrahydridoborate): PH4+ can act as a Bronsted base because it has an available lone pair of electrons that can accept a proton.

7. CO3^2- (Carbonate Ion): CO3^2- can also act as a Bronsted base because it possesses two available lone pairs of electrons that can accept a proton.

Based on the above analysis, the substances that can act as Bronsted bases in aqueous solution are:
- H2O
- NH3
- CH3NH2
- PH41+ (Tetrahydridoborate)
- CO32- (Carbonate Ion)

Which of the following substances can act as a Bronsted base in aqueous solution? (Select all that apply.)

1 2 4 7

To determine which substances can act as a Bronsted base in aqueous solution, we need to consider their ability to accept a proton (H+ ion).

To determine which substances can act as a Bronsted base in aqueous solution, we need to understand the characteristics of a Bronsted base. A Bronsted base is a substance that accepts a proton (H+) from another substance, typically an acid.