Being amphoteric water can react both: Lewis acid and Lewis base.
In the reaction, HBr donates a proton (H+) to H2O, making HBr the acid and H2O the base. The resulting products are Br- (conjugate base of HBr) and H3O+ (conjugate acid of H2O).
The conjugate acid of the base H2O is the hydronium ion (H3O+), which forms when H2O accepts a proton (H+).
An acid accepts an electron pair from a base.
The conjugate acid of H2O is H3O+ (hydronium ion). When an acid donates a proton, it forms its conjugate base, and when a base accepts a proton, it forms its conjugate acid.
CH3OH is a Lewis base.
In the reaction, HBr donates a proton (H+) to H2O, making HBr the acid and H2O the base. The resulting products are Br- (conjugate base of HBr) and H3O+ (conjugate acid of H2O).
The conjugate acid of the base H2O is the hydronium ion (H3O+), which forms when H2O accepts a proton (H+).
An acid accepts an electron pair from a base.
The conjugate acid of H2O is H3O+ (hydronium ion). When an acid donates a proton, it forms its conjugate base, and when a base accepts a proton, it forms its conjugate acid.
There are Bronsted-Lowry bases and Lewis bases... Brønsted bases accept protons (H+) and Lewis bases donate electrons... So something like H2O + H2O--> H3O (hydronium) + -OH would mean that H2O is a Bronsted base and acid. You have to look at it in context.
CH3OH is a Lewis base.
Examples of Lewis bases include ammonia (NH3), water (H2O), and hydroxide ion (OH-). Lewis bases are molecules or ions that can donate an electron pair to form a covalent bond with a Lewis acid.
Br can act as a Lewis base by donating its lone pair of electrons to form a coordinate covalent bond with a Lewis acid.
In a Lewis acid-base reaction, a Lewis acid (electron pair acceptor) reacts with a Lewis base (electron pair donor) to form a coordination complex. The Lewis acid accepts electron pairs from the Lewis base, resulting in the formation of a coordinate covalent bond between the two species.
The conjugate acid for the base OH- is H2O. This is because when OH- accepts a hydrogen ion (H+), it forms water (H2O).
OH -I assume.
Lewis acid is an electron acceptor / Lewis base is an electron donor. It is helpful to use this definition of acid and base in (1) organic chemistry (2) also when there are no Hydrogens present in the molecule. BF3 is a Lewis acid it seeks out and can accept electrons.